diff --git a/mkspecs/common/gcc-base.conf b/mkspecs/common/gcc-base.conf
index e7e6ee1..ff2a939 100644
--- a/mkspecs/common/gcc-base.conf
+++ b/mkspecs/common/gcc-base.conf
@@ -32,7 +32,7 @@
 #
 
 QMAKE_CFLAGS_OPTIMIZE      = -O2
-QMAKE_CFLAGS_OPTIMIZE_FULL = -O3
+QMAKE_CFLAGS_OPTIMIZE_FULL = -O2
 QMAKE_CFLAGS_OPTIMIZE_DEBUG = -Og
 QMAKE_CFLAGS_OPTIMIZE_SIZE = -Os
 
