diff --git a/configure/CONFIG_COMMON b/configure/CONFIG_COMMON
index fcb51e786..f07162876 100644
--- a/configure/CONFIG_COMMON
+++ b/configure/CONFIG_COMMON
@@ -90,7 +90,7 @@ GCC_STRICT = $(GCC) -ansi -pedantic
 GCC_TRAD = $(GCC) -traditional
 GCC_WARN_YES = -Wall
 GCC_WARN_NO = -w
-GCC_OPT_YES = -O
+GCC_OPT_YES = -O3
 GCC_OPT_NO = -g
 GCC_SFLAGS_YES = -static
 GCC_SFLAGS_NO =