diff --git a/src/build/Common.bmake b/src/build/Common.bmake
index 0ad06a5d077e2f23ee4f00ab86e09a094ae47438..0fe40ca255a09f20f64a947bb00c51d83dbee43b 100644
--- a/src/build/Common.bmake
+++ b/src/build/Common.bmake
@@ -139,6 +139,9 @@ MKSHLIB =       $(CC) -WD
 CFLAGS	=	$(CFLAGS) -Od -D_DEBUG 
 !endif
 
+# Required for C++Builder 2010
+CFLAGS	=	$(CFLAGS) -DHAS_STDINT_H -D_WIN32_WINNT=0x502
+
 # Debug or release build?
 !ifdef DEBUG
 BUILD	=	debug