diff --git a/src/plugins/qtsupport/baseqtversion.cpp b/src/plugins/qtsupport/baseqtversion.cpp
index 454c0d7b01f..e9feec7f2a4 100644
--- a/src/plugins/qtsupport/baseqtversion.cpp
+++ b/src/plugins/qtsupport/baseqtversion.cpp
@@ -526,8 +526,11 @@ Tasks BaseQtVersion::validateKit(const Kit *k)
                 qtAbiString.append(' ');
             qtAbiString.append(qtAbi.toString());
 
-            if (!fullMatch)
-                fullMatch = supportedAbis.contains(qtAbi);
+            if (!fullMatch) {
+                fullMatch = supportedAbis.contains(qtAbi)
+                            && qtAbi.wordWidth() == targetAbi.wordWidth()
+                            && qtAbi.architecture() == targetAbi.architecture();
+            }
             if (!fuzzyMatch && !fullMatch) {
                 fuzzyMatch = Utils::anyOf(supportedAbis, [&](const Abi &abi) {
                     return qtAbi.isCompatibleWith(abi);
diff --git a/src/plugins/qtsupport/qtkitinformation.cpp b/src/plugins/qtsupport/qtkitinformation.cpp
index d6aca91001a..153f43ac0f1 100644
--- a/src/plugins/qtsupport/qtkitinformation.cpp
+++ b/src/plugins/qtsupport/qtkitinformation.cpp
@@ -224,8 +224,11 @@ void QtKitAspect::fix(Kit *k)
     QList<ToolChain *> possibleTcs = ToolChainManager::toolChains([version](const ToolChain *t) {
         if (!t->isValid() || t->language() != ProjectExplorer::Constants::CXX_LANGUAGE_ID)
             return false;
-        return Utils::anyOf(version->qtAbis(),
-                            [t](const Abi &qtAbi) { return t->supportedAbis().contains(qtAbi); });
+        return Utils::anyOf(version->qtAbis(), [t](const Abi &qtAbi) {
+            return t->supportedAbis().contains(qtAbi)
+                   && t->targetAbi().wordWidth() == qtAbi.wordWidth()
+                   && t->targetAbi().architecture() == qtAbi.architecture();
+        });
     });
     if (!possibleTcs.isEmpty()) {
         // Prefer exact matches.