diff --git a/libgambatte/src/interrupter.cpp b/libgambatte/src/interrupter.cpp
index d435c28..dbae2e2 100644
--- a/libgambatte/src/interrupter.cpp
+++ b/libgambatte/src/interrupter.cpp
@@ -63,7 +63,7 @@ void Interrupter::setGameShark(const std::string &codes) {
 
 void Interrupter::applyVblankCheats(const unsigned long cycleCounter, Memory &memory) {
 	for (std::size_t i = 0, size = gsCodes.size(); i < size; ++i) {
-		if (gsCodes[i].type == 0x01)
+		if (gsCodes[i].type == 0x01 || gsCodes[i].type == 0x91)
 			memory.write(gsCodes[i].address, gsCodes[i].value, cycleCounter);
 	}
 }