diff --git a/slsDetectorServers/mythen3DetectorServer/RegisterDefs.h b/slsDetectorServers/mythen3DetectorServer/RegisterDefs.h
index 8eb6ebc68..4cd7ddc9f 100644
--- a/slsDetectorServers/mythen3DetectorServer/RegisterDefs.h
+++ b/slsDetectorServers/mythen3DetectorServer/RegisterDefs.h
@@ -120,7 +120,7 @@
 #define CONFIG_DYNAMIC_RANGE_16_VAL     ((0x2 << CONFIG_DYNAMIC_RANGE_OFST) & CONFIG_DYNAMIC_RANGE_MSK)
 #define CONFIG_DYNAMIC_RANGE_24_VAL     ((0x3 << CONFIG_DYNAMIC_RANGE_OFST) & CONFIG_DYNAMIC_RANGE_MSK)
 #define CONFIG_TRIGGER_ENA_OFST         (8)
-#define CONFIG_TRIGGER_ENA_MSK          (0x00000001 << CONGIG_TRIGGER_ENA_OFST)
+#define CONFIG_TRIGGER_ENA_MSK          (0x00000001 << CONFIG_TRIGGER_ENA_OFST)
 
 
 /* Control RW register */