diff --git a/lib/wsprd/wsprsim_utils.c b/lib/wsprd/wsprsim_utils.c
index b6b95c491..0130a87ec 100644
--- a/lib/wsprd/wsprsim_utils.c
+++ b/lib/wsprd/wsprsim_utils.c
@@ -196,7 +196,7 @@ int get_wspr_channel_symbols(char* rawmessage, char* hashtab, char* loctab, unsi
     // Use the presence and/or absence of "<" and "/" to decide what
     // type of message. No sanity checks! Beware!
     
-    if( i1 > 3 && i1 < 7 && i2 == mlen && i3 == mlen ) {
+    if( i1 >= 3 && i1 < 7 && i2 == mlen && i3 == mlen ) {
         // Type 1 message: K9AN EN50 33
         //                 xxnxxxx xxnn nn
         callsign = strtok(message," ");