diff --git a/src/CbcSolver.cpp b/src/CbcSolver.cpp
index 93da884..1c9d463 100644
--- a/src/CbcSolver.cpp
+++ b/src/CbcSolver.cpp
@@ -32,6 +32,9 @@
 void CbcCrashHandler(int sig);
 #endif
 
+// glpk currently not supported
+#undef COINUTILS_HAS_GLPK
+
 #ifdef COINUTILS_HAS_GLPK
 #include "glpk.h"
 #endif