diff --git a/toolkit/xre/nsAppRunner.cpp b/toolkit/xre/nsAppRunner.cpp
index a6aaa96922b..96aa62ad95d 100644
--- a/toolkit/xre/nsAppRunner.cpp
+++ b/toolkit/xre/nsAppRunner.cpp
@@ -1421,7 +1421,7 @@ XRE_GetBinaryPath(const char* argv0, nsILocalFile* *aResult)
   if (NS_FAILED(rv))
     return rv;
 
-#elif
+#else
 #error Oops, you need platform-specific code here
 #endif