diff --git a/SConscript b/SConscript
index 412f5897c6bee0c941158bfdc754c2c52295b98a..7c7cae949ccb2d9d5393ea6c799abdf4165b5dda 100644
--- a/SConscript
+++ b/SConscript
@@ -68,7 +68,7 @@ elif int(argenv['profile']) == 1:
 	STARS_LDPREFIX=""
 else:
 	print "Setting release mode"
-	STARS_CCFLAGS=" -O3 "
+	STARS_CCFLAGS=" -O2 "
 	STARS_LDFLAGS=""
 	STARS_LDPREFIX=""