diff --git a/desmume/src/matrix.cpp b/desmume/src/matrix.cpp
index d9c3bd780..b298cb4fe 100644
--- a/desmume/src/matrix.cpp
+++ b/desmume/src/matrix.cpp
@@ -195,7 +195,7 @@ void MatrixStackSetStackPosition (MatrixStack *stack, int pos)
 	if (stack->position < 0)
 		stack->position = 0;
 	else if (stack->position > stack->size)	
-		stack->position = stack->size;
+		stack->position = stack->size+1;
 }
 
 void MatrixStackPushMatrix (MatrixStack *stack, const float *ptr)