diff --git a/package/libs/openssl/Makefile b/package/libs/openssl/Makefile
index 9b6430234e0..b39e3c6d7af 100644
--- a/package/libs/openssl/Makefile
+++ b/package/libs/openssl/Makefile
@@ -168,7 +168,7 @@ else
   endif
 endif
 
-STAMP_CONFIGURED := $(STAMP_CONFIGURED)_$(subst $(space),_,$(OPENSSL_OPTIONS))
+STAMP_CONFIGURED := $(STAMP_CONFIGURED)_$(shell echo $(OPENSSL_OPTIONS) | mkhash md5)
 
 define Build/Configure
 	[ -f $(STAMP_CONFIGURED) ] || { \