diff --git a/share/qtcreator/debugger/gdbbridge.py b/share/qtcreator/debugger/gdbbridge.py
index 492ec4144aa..2e032bee0b7 100644
--- a/share/qtcreator/debugger/gdbbridge.py
+++ b/share/qtcreator/debugger/gdbbridge.py
@@ -253,12 +253,12 @@ class Dumper(DumperBase):
         self.useDynamicType = int(args.get("dyntype", "0"))
         self.useFancy = int(args.get("fancy", "0"))
         self.forceQtNamespace = int(args.get("forcens", "0"))
-        self.passExceptions = int(args.get("passexeptions", "0"))
+        self.passExceptions = int(args.get("passexceptions", "0"))
         self.nativeMixed = int(args.get("nativemixed", "0"))
         self.autoDerefPointers = int(args.get("autoderef", "0"))
         self.partialUpdate = int(args.get("partial", "0"))
         self.fallbackQtVersion = 0x50200
-        self.sortStructMembers = bool(args.get("sortStructMembers", True))
+        self.sortStructMembers = bool(args.get("sortstructs", True))
 
         #warn("NAMESPACE: '%s'" % self.qtNamespace())
         #warn("EXPANDED INAMES: %s" % self.expandedINames)
@@ -355,7 +355,7 @@ class Dumper(DumperBase):
 
     def fetchVariables(self, args):
         self.prepare(args)
-        partialVariable = args.get("partialVariable", "")
+        partialVariable = args.get("partialvar", "")
         isPartial = len(partialVariable) > 0
 
         (ok, res) = self.tryFetchInterpreterVariables(args)
@@ -1763,7 +1763,7 @@ class CliDumper(Dumper):
 
     def fetchVariables(self, args):
         args['fancy'] = 1
-        args['passException'] = 1
+        args['passexception'] = 1
         args['autoderef'] = 1
         name = args['varlist']
         self.prepare(args)
diff --git a/share/qtcreator/debugger/lldbbridge.py b/share/qtcreator/debugger/lldbbridge.py
index 093797e7ab4..d38e9d1f5da 100644
--- a/share/qtcreator/debugger/lldbbridge.py
+++ b/share/qtcreator/debugger/lldbbridge.py
@@ -654,14 +654,14 @@ class Dumper(DumperBase):
         error = lldb.SBError()
 
         self.executable_ = args['executable']
-        self.startMode_ = args.get('startMode', 1)
-        self.breakOnMain_ = args.get('breakOnMain', 0)
-        self.useTerminal_ = args.get('useTerminal', 0)
-        self.processArgs_ = args.get('processArgs', [])
+        self.startMode_ = args.get('startmode', 1)
+        self.breakOnMain_ = args.get('breakonmain', 0)
+        self.useTerminal_ = args.get('useterminal', 0)
+        self.processArgs_ = args.get('processargs', [])
         self.processArgs_ = map(lambda x: self.hexdecode(x), self.processArgs_)
-        self.attachPid_ = args.get('attachPid', 0)
-        self.sysRoot_ = args.get('sysRoot', '')
-        self.remoteChannel_ = args.get('remoteChannel', '')
+        self.attachPid_ = args.get('attachpid', 0)
+        self.sysRoot_ = args.get('sysroot', '')
+        self.remoteChannel_ = args.get('remotechannel', '')
         self.platform_ = args.get('platform', '')
         self.nativeMixed = int(args.get('nativemixed', 0))
 
@@ -1152,13 +1152,13 @@ class Dumper(DumperBase):
 
         self.expandedINames = set(args.get('expanded', []))
         self.autoDerefPointers = int(args.get('autoderef', '0'))
-        self.sortStructMembers = bool(args.get('sortStructMembers', True));
+        self.sortStructMembers = bool(args.get('sortstructs', True));
         self.useDynamicType = int(args.get('dyntype', '0'))
         self.useFancy = int(args.get('fancy', '0'))
         self.passExceptions = int(args.get('passexceptions', '0'))
         self.currentWatchers = args.get('watchers', {})
-        self.typeformats = args.get("typeformats", {})
-        self.formats = args.get("formats", {})
+        self.typeformats = args.get('typeformats', {})
+        self.formats = args.get('formats', {})
 
         frame = self.currentFrame()
         if frame is None:
@@ -1166,7 +1166,7 @@ class Dumper(DumperBase):
             return
 
         self.output = ''
-        partialVariable = args.get("partialVariable", "")
+        partialVariable = args.get('partialvar', "")
         isPartial = len(partialVariable) > 0
 
         self.currentIName = 'local'
diff --git a/src/plugins/debugger/gdb/gdbengine.cpp b/src/plugins/debugger/gdb/gdbengine.cpp
index 5303b65c9b5..b18d4fdccf6 100644
--- a/src/plugins/debugger/gdb/gdbengine.cpp
+++ b/src/plugins/debugger/gdb/gdbengine.cpp
@@ -4625,7 +4625,7 @@ void GdbEngine::doUpdateLocals(const UpdateParameters &params)
 
     const static bool alwaysVerbose = !qgetenv("QTC_DEBUGGER_PYTHON_VERBOSE").isEmpty();
 
-    cmd.arg("passExceptions", alwaysVerbose);
+    cmd.arg("passexceptions", alwaysVerbose);
     cmd.arg("fancy", boolSetting(UseDebuggingHelpers));
     cmd.arg("autoderef", boolSetting(AutoDerefPointers));
     cmd.arg("dyntype", boolSetting(UseDynamicType));
@@ -4635,12 +4635,12 @@ void GdbEngine::doUpdateLocals(const UpdateParameters &params)
     cmd.arg("context", frame.context);
 
     cmd.arg("resultvarname", m_resultVarName);
-    cmd.arg("partialVariable", params.partialVariable);
-    cmd.arg("sortStructMembers", boolSetting(SortStructMembers));
+    cmd.arg("partialvar", params.partialVariable);
+    cmd.arg("sortstructs", boolSetting(SortStructMembers));
     cmd.callback = CB(handleFetchVariables);
     runCommand(cmd);
 
-    cmd.arg("passExceptions", true);
+    cmd.arg("passexceptions", true);
     m_lastDebuggableCommand = cmd;
 }
 
diff --git a/src/plugins/debugger/lldb/lldbengine.cpp b/src/plugins/debugger/lldb/lldbengine.cpp
index c9536e92c62..bb5fa23620e 100644
--- a/src/plugins/debugger/lldb/lldbengine.cpp
+++ b/src/plugins/debugger/lldb/lldbengine.cpp
@@ -332,15 +332,15 @@ void LldbEngine::setupInferior()
 
     DebuggerCommand cmd2("setupInferior");
     cmd2.arg("executable", executable);
-    cmd2.arg("breakOnMain", rp.breakOnMain);
-    cmd2.arg("useTerminal", rp.useTerminal);
-    cmd2.arg("startMode", rp.startMode);
+    cmd2.arg("breakonmain", rp.breakOnMain);
+    cmd2.arg("useterminal", rp.useTerminal);
+    cmd2.arg("startmode", rp.startMode);
     cmd2.arg("nativemixed", isNativeMixedActive());
 
     QJsonArray processArgs;
     foreach (const QString &arg, args.toUnixArgs())
         processArgs.append(QLatin1String(arg.toUtf8().toHex()));
-    cmd2.arg("processArgs", processArgs);
+    cmd2.arg("processargs", processArgs);
 
     if (rp.useTerminal) {
         QTC_ASSERT(state() == InferiorSetupRequested, qDebug() << state());
@@ -350,18 +350,18 @@ void LldbEngine::setupInferior()
                 ? QString::fromLatin1("Attaching to %1 (%2)").arg(attachedPID).arg(attachedMainThreadID)
                 : QString::fromLatin1("Attaching to %1").arg(attachedPID);
         showMessage(msg, LogMisc);
-        cmd2.arg("attachPid", attachedPID);
+        cmd2.arg("attachpid", attachedPID);
 
     } else {
 
-        cmd2.arg("startMode", rp.startMode);
+        cmd2.arg("startmode", rp.startMode);
         // it is better not to check the start mode on the python sid (as we would have to duplicate the
         // enum values), and thus we assume that if the rp.attachPID is valid we really have to attach
         QTC_CHECK(rp.attachPID <= 0 || (rp.startMode == AttachCrashedExternal
                                     || rp.startMode == AttachExternal));
-        cmd2.arg("attachPid", rp.attachPID);
-        cmd2.arg("sysRoot", rp.deviceSymbolsRoot.isEmpty() ? rp.sysRoot : rp.deviceSymbolsRoot);
-        cmd2.arg("remoteChannel", ((rp.startMode == AttachToRemoteProcess
+        cmd2.arg("attachpid", rp.attachPID);
+        cmd2.arg("sysroot", rp.deviceSymbolsRoot.isEmpty() ? rp.sysRoot : rp.deviceSymbolsRoot);
+        cmd2.arg("remotechannel", ((rp.startMode == AttachToRemoteProcess
                                    || rp.startMode == AttachToRemoteServer)
                                   ? rp.remoteChannel : QString()));
         cmd2.arg("platform", rp.platform);
@@ -795,8 +795,8 @@ void LldbEngine::doUpdateLocals(const UpdateParameters &params)
     cmd.arg("fancy", boolSetting(UseDebuggingHelpers));
     cmd.arg("autoderef", boolSetting(AutoDerefPointers));
     cmd.arg("dyntype", boolSetting(UseDynamicType));
-    cmd.arg("partialVariable", params.partialVariable);
-    cmd.arg("sortStructMembers", boolSetting(SortStructMembers));
+    cmd.arg("partialvar", params.partialVariable);
+    cmd.arg("sortstructs", boolSetting(SortStructMembers));
 
     StackFrame frame = stackHandler()->currentFrame();
     cmd.arg("context", frame.context);
diff --git a/tests/auto/debugger/tst_dumpers.cpp b/tests/auto/debugger/tst_dumpers.cpp
index c04d79b1dee..fe31eb3b354 100644
--- a/tests/auto/debugger/tst_dumpers.cpp
+++ b/tests/auto/debugger/tst_dumpers.cpp
@@ -1282,7 +1282,7 @@ void tst_Dumpers::dumper()
                 "python theDumper.setupDumpers()\n"
                 "run " + nograb + "\n"
                 "python theDumper.fetchVariables({'fancy':1,'forcens':1,"
-                    "'autoderef':1,'dyntype':1,'passExceptions':1,"
+                    "'autoderef':1,'dyntype':1,'passexceptions':1,"
                     "'expanded':[" + expandedq + "]})\n";
 
         cmds += "quit\n";