diff --git a/radio/src/wfm_demod.h b/radio/src/wfm_demod.h
index ffe48203..d07614ff 100644
--- a/radio/src/wfm_demod.h
+++ b/radio/src/wfm_demod.h
@@ -190,7 +190,7 @@ private:
     const float bwMax = 250000;
     const float bwMin = 50000;
     const float bbSampRate = 250000;
-    const char* deempModes = "50µS\00075µS\000none\000";
+    const char* deempModes = "50µs\00075µs\000none\000";
     const float deempVals[2] = { 50e-6, 75e-6 };
 
     std::string uiPrefix;