diff --git a/modules/oji/src/nsJVMPluginTagInfo.cpp b/modules/oji/src/nsJVMPluginTagInfo.cpp
index f88abbaf4f20..65371b2c7d55 100644
--- a/modules/oji/src/nsJVMPluginTagInfo.cpp
+++ b/modules/oji/src/nsJVMPluginTagInfo.cpp
@@ -146,7 +146,7 @@ nsJVMPluginTagInfo::GetCodeBase(const char* *result)
     }
     
     PA_UNLOCK(docBase);
-    nsCRT::free(docBase);
+    nsCRT::free((char *)docBase);
     *result = fSimulatedCodebase;
     return NS_OK;
 }