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-rw-r--r--engines/sci/engine/kgraphics.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/engines/sci/engine/kgraphics.cpp b/engines/sci/engine/kgraphics.cpp
index e956051677..a05dea88cd 100644
--- a/engines/sci/engine/kgraphics.cpp
+++ b/engines/sci/engine/kgraphics.cpp
@@ -2378,7 +2378,7 @@ reg_t kSetPort(EngineState *s, int funct_nr, int argc, reg_t *argv) {
s->gfx_state->pic_port_bounds = gfx_rect(UKPV(5), UKPV(4), UKPV(3), UKPV(2));
// Notify the graphics resource manager that the pic port bounds changed
- s->gfx_state->gfxResMan->changePortBounds(UKPV(5), UKPV(4), UKPV(3), UKPV(2));
+ s->gfx_state->gfxResMan->changePortBounds(UKPV(5), UKPV(4), UKPV(3) - UKPV(5), UKPV(2) - UKPV(4));
// FIXME: Should really only invalidate all loaded pic resources here;
// this is overkill