diff --git a/modules/Makefile.in b/modules/Makefile.in
index 1572f74c..94a222d5 100644
--- a/modules/Makefile.in
+++ b/modules/Makefile.in
@@ -1,5 +1,5 @@
 prefix=@prefix@
-CXX=g++
+CXX=@CXX@
 CXXFLAGS=@CXXFLAGS@
 INCLUDES=@INCLUDES@ -I..
 LIBS=@LIBS@