diff --git a/Qt/Native.pro b/Qt/Native.pro
index 3b2b560e39..c16f41476d 100644
--- a/Qt/Native.pro
+++ b/Qt/Native.pro
@@ -7,7 +7,7 @@ CONFIG += staticlib
 include(Settings.pri)
 
 # To support Sailfish which is stuck on GCC 4.6
-linux-g++:system($$QMAKE_CXX --version | grep "4.6."): DEFINES+=override
+linux-g++:system($$QMAKE_CXX --version | grep \"4\.6\.\"): DEFINES+=override
 
 INCLUDEPATH += $$P/ext/native
 
diff --git a/Qt/PPSSPP.pro b/Qt/PPSSPP.pro
index 6979400d82..8d6f2ba856 100644
--- a/Qt/PPSSPP.pro
+++ b/Qt/PPSSPP.pro
@@ -10,7 +10,7 @@ else: LIBS += -lCore -lGPU -lCommon -lNative
 include(Settings.pri)
 
 # To support Sailfish which is stuck on GCC 4.6
-linux-g++:system($$QMAKE_CXX --version | grep "4.6."): DEFINES+=override
+linux-g++:system($$QMAKE_CXX --version | grep \"4\.6\.\"): DEFINES+=override
 
 lessThan(QT_MAJOR_VERSION, 5) {
 	macx: error(PPSSPP requires Qt5 for OS X but $$[QT_VERSION] was detected.)