diff --git a/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h b/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
index 015edfe82..ee230f66d 100644
--- a/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
+++ b/slsDetectorServers/slsDetectorServer/include/slsDetectorFunctionList.h
@@ -25,7 +25,7 @@
 #include "blackfin.h"
 #endif
 
-#if defined(MYTHEN3D)
+#ifdef MYTHEN3D
 #include "mythen3.h"
 #endif