diff --git a/crypto/bf/Makefile b/crypto/bf/Makefile
index 385215b5e..81e4b7cd8 100644
--- a/crypto/bf/Makefile
+++ b/crypto/bf/Makefile
@@ -62,7 +62,10 @@ links:
 	@$(PERL) $(TOP)/util/mklink.pl ../../test $(TEST)
 	@$(PERL) $(TOP)/util/mklink.pl ../../apps $(APPS)
 
-install:
+# We need to use force because 'install' matches 'INSTALL' on case
+# insensitive systems
+FRC.install:
+install: FRC.install
 	@[ -n "$(INSTALLTOP)" ] # should be set by top Makefile...
 	@headerlist="$(EXHEADER)"; for i in $$headerlist ; \
 	do  \
diff --git a/crypto/des/Makefile b/crypto/des/Makefile
index 434809ae8..aa633bf3e 100644
--- a/crypto/des/Makefile
+++ b/crypto/des/Makefile
@@ -88,7 +88,10 @@ links:
 	@$(PERL) $(TOP)/util/mklink.pl ../../test $(TEST)
 	@$(PERL) $(TOP)/util/mklink.pl ../../apps $(APPS)
 
-install:
+# We need to use force because 'install' matches 'INSTALL' on case
+# insensitive systems
+FRC.install:
+install: FRC.install
 	@[ -n "$(INSTALLTOP)" ] # should be set by top Makefile...
 	@headerlist="$(EXHEADER)"; for i in $$headerlist ; \
 	do  \