--- a/qt4/common.pro.in
+++ b/qt4/common.pro.in
@@ -20,10 +20,6 @@
 QMAKE_CXX               = @CXX@
 QMAKE_CXXFLAGS_DEBUG   += @CXXFLAGS@ @CPPFLAGS@ @X_CFLAGS@
 QMAKE_CXXFLAGS_RELEASE += @CXXFLAGS@ @CPPFLAGS@ @X_CFLAGS@
-# Remove "-Wconversion" from CXXFLAGS to avoid lots of warnings
-# from Qt4 header files
-QMAKE_CXXFLAGS_DEBUG    = $$replace(QMAKE_CXXFLAGS_DEBUG, "-Wconversion", "")
-QMAKE_CXXFLAGS_RELEASE  = $$replace(QMAKE_CXXFLAGS_RELEASE, "-Wconversion", "")
 QMAKE_LINK              = @CXX@
 QMAKE_LFLAGS            = @LDFLAGS@
 QMAKE_STRIP             =