diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm.cpp
index ca66382ebb02..291925feb92d 100644
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm.cpp
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm.cpp
@@ -74,7 +74,6 @@ PrepareAndDispatch(nsXPTCStubBase* self, uint32 methodIndex, PRUint32* args)
 
     nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
     nsXPTCMiniVariant* dispatchParams = NULL;
-    nsIInterfaceInfo* iface_info = NULL;
     const nsXPTMethodInfo* info;
     PRUint8 paramCount;
     PRUint8 i;
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm_openbsd.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm_openbsd.cpp
index c78a5487fe7e..722b6f7ef9bd 100644
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm_openbsd.cpp
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_arm_openbsd.cpp
@@ -64,7 +64,6 @@ PrepareAndDispatch(nsXPTCStubBase* self, uint32 methodIndex, PRUint32* args)
 
     nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
     nsXPTCMiniVariant* dispatchParams = NULL;
-    nsIInterfaceInfo* iface_info = NULL;
     const nsXPTMethodInfo* info;
     PRUint8 paramCount;
     PRUint8 i;
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparc64_openbsd.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparc64_openbsd.cpp
index 848e29802b0d..fbeda0e8d2b8 100644
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparc64_openbsd.cpp
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparc64_openbsd.cpp
@@ -52,7 +52,6 @@ PrepareAndDispatch(nsXPTCStubBase* self, PRUint64 methodIndex, PRUint64* args)
 
     nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
     nsXPTCMiniVariant* dispatchParams = NULL;
-    nsIInterfaceInfo* iface_info = NULL;
     const nsXPTMethodInfo* info;
     PRUint8 paramCount;
     PRUint8 i;
diff --git a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparcv9_solaris.cpp b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparcv9_solaris.cpp
index 274f8d3f26bd..14d28c3303a3 100644
--- a/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparcv9_solaris.cpp
+++ b/xpcom/reflect/xptcall/src/md/unix/xptcstubs_sparcv9_solaris.cpp
@@ -52,7 +52,6 @@ PrepareAndDispatch(nsXPTCStubBase* self, PRUint64 methodIndex, PRUint64* args)
 
     nsXPTCMiniVariant paramBuffer[PARAM_BUFFER_COUNT];
     nsXPTCMiniVariant* dispatchParams = NULL;
-    nsIInterfaceInfo* iface_info = NULL;
     const nsXPTMethodInfo* info;
     PRUint8 paramCount;
     PRUint8 i;