diff --git a/radio/src/pulses/modules.h b/radio/src/pulses/modules.h
index a585ffe10..f8fe96433 100644
--- a/radio/src/pulses/modules.h
+++ b/radio/src/pulses/modules.h
@@ -256,7 +256,7 @@ static const uint8_t moduleOptions[] = {
   0b11100100, // R9M
   0b11100100, // R9MLite
   0b11111100, // R9MLite-PRO
-  0b11101010, // ISRM-N
+  0b11101000, // ISRM-N
 };
 
 inline bool isModuleOptionAvailable(uint8_t modelId, uint8_t option)