diff --git a/src/command.cpp b/src/command.cpp
index 36c444a02..773e0fa17 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -381,7 +381,7 @@ uint8_t Command::call(const uint8_t device_type, const char * cmd, const char *
         if ((value == nullptr) || (strlen(value) == 0)) {
             LOG_ERROR("Command '%s' failed with error '%s'", cmd, FL_(cmdRet)[return_code]);
         } else {
-            LOG_ERROR("Command '%s/%s' failed with error '%s'", cmd, value, FL_(cmdRet)[return_code]);
+            LOG_ERROR("Command '%s: %s' failed with error '%s'", cmd, value, FL_(cmdRet)[return_code]);
         }
         return message(return_code, "callback function failed", output);
     }