diff --git a/crypto/Makefile.ssl b/crypto/Makefile.ssl
index 31aefe245..f155434ff 100644
--- a/crypto/Makefile.ssl
+++ b/crypto/Makefile.ssl
@@ -106,7 +106,7 @@ install:
 	@for i in $(SDIRS) ;\
 	do \
 	(cd $$i; echo "making install in crypto/$$i..."; \
-	$(MAKE) CC='$(CC)' CFLAG='${CFLAG}' INSTALLTOP='${INSTALLTOP}' PEX_LIBS='${PEX_LIBS}' EX_LIBS='${EX_LIBS}' install ); \
+	$(MAKE) CC='$(CC)' CFLAG='${CFLAG}' INSTALL_PREFIX='${INSTALL_PREFIX}'  INSTALLTOP='${INSTALLTOP}' PEX_LIBS='${PEX_LIBS}' EX_LIBS='${EX_LIBS}' install ); \
 	done;
 
 lint: