diff --git a/Makefile b/Makefile
index d4cbe4d..e2e5531 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 
 WINDRES  ?= windres
 LDFLAGS   = -Iinc -Wall -Wl,--enable-stdcall-fixup -s
-CFLAGS    = -std=c99 -O3 -march=i486
+CFLAGS    = -std=c99 -O2 -march=i486
 LIBS      = -lgdi32 -lwinmm -lpsapi -ldbghelp -lole32
 
 FILES = src/IDirect3D/IDirect3D.c \
diff --git a/ddraw.rc b/ddraw.rc
index 0917e01..075bf4f 100644
--- a/ddraw.rc
+++ b/ddraw.rc
@@ -2,8 +2,8 @@
 #define ver_str(a,b,c,d) str(a) "." str(b) "." str(c) "." str(d)
 
 #define VERSION_MAJOR    5
-#define VERSION_MINOR    0
-#define VERSION_BUILD    1
+#define VERSION_MINOR    1
+#define VERSION_BUILD    0
 #define VERSION_REVISION 0  
 
 #define VERSION          VERSION_MAJOR, VERSION_MINOR, VERSION_BUILD, VERSION_REVISION