diff --git a/Makefile b/Makefile
index 7e457e92..4df80d6b 100644
--- a/Makefile
+++ b/Makefile
@@ -151,6 +151,7 @@ VERSION_EXT =
 # OSX?
 ifeq ($(UNAME_S),Darwin)
 EXT = dylib
+VERSION_EXT = $(API_MAJOR).$(EXT)
 AR_EXT = a
 ifneq ($(USE_SYS_DYN_MEM),yes)
 # remove string check because OSX kernel complains about missing symbols