diff --git a/code/qcommon/vm_x86.c b/code/qcommon/vm_x86.c
index b896883d..77aba05b 100644
--- a/code/qcommon/vm_x86.c
+++ b/code/qcommon/vm_x86.c
@@ -1087,8 +1087,9 @@ void VM_Compile(vm_t *vm, vmHeader_t *header)
 
 	// ensure that the optimisation pass knows about all the jump
 	// table targets
+	pc = -1; // a bogus value to be printed in out-of-bounds error messages
 	for( i = 0; i < vm->numJumpTableTargets; i++ ) {
-		jused[ *(int *)(vm->jumpTableTargets + ( i * sizeof( int ) ) ) ] = 1;
+		JUSED( *(int *)(vm->jumpTableTargets + ( i * sizeof( int ) ) ) );
 	}
 
 	// Start buffer with x86-VM specific procedures