diff --git a/makerelease-osx.mk b/makerelease-osx.mk
index 1444fb66..242dcc4d 100644
--- a/makerelease-osx.mk
+++ b/makerelease-osx.mk
@@ -90,9 +90,9 @@ endif
 endif
 
 # Set up compiler.
-CC ?= cc
+CC = cc
 export CC
-CXX ?= c++
+CXX = c++
 export CXX
 
 # Set up compiler/linker flags.