diff --git a/src/Instrumentation/tacan.cxx b/src/Instrumentation/tacan.cxx
index 061a6bcfc..18baef938 100755
--- a/src/Instrumentation/tacan.cxx
+++ b/src/Instrumentation/tacan.cxx
@@ -371,7 +371,7 @@ TACAN::searchChannel (const string& _channel){
         frequency_khz = freq->get_freq();
         SG_LOG( SG_INSTR, SG_DEBUG, "freq output " << frequency_khz  );
         //check sanity
-        if (frequency_khz >9620 && frequency_khz <= 12130)
+        if (frequency_khz >=9620 && frequency_khz <= 12130)
             return frequency_khz/100;
     }
     return frequency_khz = 0;