diff --git a/qtinterface/interface_qt3/tmoc.cmake b/qtinterface/interface_qt3/tmoc.cmake
index 087fbdb..5321484 100755
--- a/qtinterface/interface_qt3/tmoc.cmake
+++ b/qtinterface/interface_qt3/tmoc.cmake
@@ -12,7 +12,10 @@ if [ -f @BIN_INSTALL_DIR@/tqt-replace-stream ]; then
 		out_file="$3"
 		@BIN_INSTALL_DIR@/tqt-replace-stream "${input_file}" | \
 	        @MOC_EXECUTABLE@ | \
-	        sed "/#include <qmetaobject.h>/ i #undef QT_NO_COMPAT\n#include \"${input_file}\"" \
+	        sed "/#include <qmetaobject.h>/ i\\
+#undef QT_NO_COMPAT\\
+#include \"${input_file}\"\\
+" \
 		> "${out_file}"
 	fi
 else
diff --git a/qtinterface/interface_tqt3/tmoc.cmake b/qtinterface/interface_tqt3/tmoc.cmake
index 8c7cfcc..c3fe0a2 100755
--- a/qtinterface/interface_tqt3/tmoc.cmake
+++ b/qtinterface/interface_tqt3/tmoc.cmake
@@ -12,7 +12,10 @@ if [ -f @BIN_INSTALL_DIR@/tqt-replace-stream ]; then
 		out_file="$3"
 		@BIN_INSTALL_DIR@/tqt-replace-stream "${input_file}" | \
 	        @MOC_EXECUTABLE@ | \
-	        sed "/#include <ntqmetaobject.h>/ i #undef QT_NO_COMPAT\n#include \"${input_file}\"" \
+	        sed "/#include <ntqmetaobject.h>/ i\\
+#undef QT_NO_COMPAT\\
+#include \"${input_file}\"\\
+" \
 		> "${out_file}"
 	fi
 else