diff --git a/lib/Bytecode/Reader/ReaderWrappers.cpp b/lib/Bytecode/Reader/ReaderWrappers.cpp
index a5cc1c9..2203f53 100644
--- a/lib/Bytecode/Reader/ReaderWrappers.cpp
+++ b/lib/Bytecode/Reader/ReaderWrappers.cpp
@@ -174,7 +174,7 @@
     M = AMP->releaseModule();
     delete AMP;
   } catch (std::string &err) {
-    if (ErrorStr) ErrorStr = err;
+    if (ErrorStr) *ErrorStr = err;
     return 0;
   }
   return M;
@@ -199,7 +199,7 @@
     M = AMP->releaseModule();
     delete AMP;
   } catch (std::string &err) {
-    if (ErrorStr) ErrorStr = err;
+    if (ErrorStr) *ErrorStr = err;
     return 0;
   }
   return M;