diff --git a/SConscript b/SConscript
index 1053a9c90..5227829fe 100644
--- a/SConscript
+++ b/SConscript
@@ -457,9 +457,9 @@ elif GetOption('release'):
 		else:
 			env.Append(CCFLAGS=['/MD'])
 	else:
-		env.Append(CCFLAGS=['-O3', '-ftree-vectorize', '-funsafe-math-optimizations', '-ffast-math', '-fomit-frame-pointer'])
+		env.Append(CCFLAGS=['-ftree-vectorize', '-funsafe-math-optimizations', '-ffast-math', '-fomit-frame-pointer'])
 		if platform != "Darwin":
-			env.Append(CCFLAGS=['-funsafe-loop-optimizations'])
+			env.Append(CCFLAGS=['-O2', '-funsafe-loop-optimizations'])
 
 if GetOption('static'):
 	if not msvc: