diff --git a/lemon/config.h.cmake b/lemon/config.h.cmake
--- a/lemon/config.h.cmake
+++ b/lemon/config.h.cmake
@@ -1,7 +1,7 @@
-#cmakedefine HAVE_LONG_LONG 1
-#cmakedefine HAVE_LP 1
-#cmakedefine HAVE_MIP 1
-#cmakedefine HAVE_GLPK 1
-#cmakedefine HAVE_CPLEX 1
-#cmakedefine HAVE_CLP 1
-#cmakedefine HAVE_CBC 1
+#cmakedefine LEMON_HAVE_LONG_LONG 1
+#cmakedefine LEMON_HAVE_LP 1
+#cmakedefine LEMON_HAVE_MIP 1
+#cmakedefine LEMON_HAVE_GLPK 1
+#cmakedefine LEMON_HAVE_CPLEX 1
+#cmakedefine LEMON_HAVE_CLP 1
+#cmakedefine LEMON_HAVE_CBC 1