diff --git a/src/command.cpp b/src/command.cpp
index f5c52531a..34cf52fbf 100644
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -221,8 +221,8 @@ const char * Command::parse_command_string(const char * command, int8_t & id) {
     } else if (!strncmp(lowerCmd, "id", 2) && command[2] >= '1' && command[2] <= '9') {
         id = command[2] - '0';
         command += 3;
-    } else if (!strncmp(lowerCmd, "ahs", 3) && command[2] >= '1' && command[2] <= '1') { // only ahs1 for now
-        id = command[2] - '1' + 19;
+    } else if (!strncmp(lowerCmd, "ahs", 3) && command[3] >= '1' && command[3] <= '1') { // only ahs1 for now
+        id = command[3] - '1' + 19;
         command += 4;
     } else if (!strncmp(lowerCmd, "hs", 2) && command[2] == '1' && command[3] >= '0' && command[3] <= '6') {
         id = command[3] - '0' + 29;