diff --git a/Source/kwsys/DynamicLoader.cxx b/Source/kwsys/DynamicLoader.cxx
index efab65a5c..0c73d7af1 100644
--- a/Source/kwsys/DynamicLoader.cxx
+++ b/Source/kwsys/DynamicLoader.cxx
@@ -437,7 +437,8 @@ const char* DynamicLoader::LastError()
 // ---------------------------------------------------------------
 // 5. Implementation for systems without dynamic libs
 // __gnu_blrts__ is IBM BlueGene/L
-#ifdef __gnu_blrts__
+// __LIBCATAMOUNT__ is defined on Catamount on Cray compute nodes
+#if defined(__gnu_blrts__) || defined(__LIBCATAMOUNT__)
 #include <string.h> // for strerror()
 #define DYNAMICLOADER_DEFINED 1