diff --git a/tests/auto/utils/filepath/filepath.qbs b/tests/auto/utils/filepath/filepath.qbs
index 73c106b2e8c..61fd74ec764 100644
--- a/tests/auto/utils/filepath/filepath.qbs
+++ b/tests/auto/utils/filepath/filepath.qbs
@@ -3,9 +3,5 @@ import qbs
 QtcAutotest {
     name: "FilePath autotest"
     Depends { name: "Utils" }
-    Properties {
-        condition: qbs.toolchain.contains("gcc")
-        cpp.cxxFlags: base.concat(["-Wno-trigraphs"])
-    }
     files: "tst_filepath.cpp"
 }
diff --git a/tests/auto/utils/fileutils/fileutils.qbs b/tests/auto/utils/fileutils/fileutils.qbs
index e19452481ed..96c1e1a5382 100644
--- a/tests/auto/utils/fileutils/fileutils.qbs
+++ b/tests/auto/utils/fileutils/fileutils.qbs
@@ -3,9 +3,5 @@ import qbs
 QtcAutotest {
     name: "FileUtils autotest"
     Depends { name: "Utils" }
-    Properties {
-        condition: qbs.toolchain.contains("gcc")
-        cpp.cxxFlags: base.concat(["-Wno-trigraphs"])
-    }
     files: "tst_fileutils.cpp"
 }
diff --git a/tests/auto/utils/unixdevicefileaccess/unixdevicefileaccess.qbs b/tests/auto/utils/unixdevicefileaccess/unixdevicefileaccess.qbs
index 1776ef4a6ee..c7a6d26a80d 100644
--- a/tests/auto/utils/unixdevicefileaccess/unixdevicefileaccess.qbs
+++ b/tests/auto/utils/unixdevicefileaccess/unixdevicefileaccess.qbs
@@ -3,9 +3,5 @@ import qbs
 QtcAutotest {
     name: "UnixDeviceFileAccess autotest"
     Depends { name: "Utils" }
-    Properties {
-        condition: qbs.toolchain.contains("gcc")
-        cpp.cxxFlags: base.concat(["-Wno-trigraphs"])
-    }
     files: "tst_unixdevicefileaccess.cpp"
 }