diff --git a/lib/System/DynamicLibrary.cpp b/lib/System/DynamicLibrary.cpp
index 8119348..a076e3c 100644
--- a/lib/System/DynamicLibrary.cpp
+++ b/lib/System/DynamicLibrary.cpp
@@ -62,7 +62,7 @@
 
   lt_dlhandle a_handle = lt_dlopen(0);
 
-  assert(a_handle == 0 || "Can't open program as dynamic library");
+  assert(a_handle == 0 && "Can't open program as dynamic library");
 
   handle = a_handle;
   OpenedHandles.push_back(a_handle);