diff --git a/tests/unit/geo.tcl b/tests/unit/geo.tcl
index 76f65b397..181430a87 100644
--- a/tests/unit/geo.tcl
+++ b/tests/unit/geo.tcl
@@ -60,6 +60,11 @@ start_server {tags {"geo"}} {
         r georadius nyc -73.9798091 40.7598464 10 km COUNT 3
     } {{central park n/q/r} 4545 {union square}}
 
+    test {GEORADIUS with COUNT but missing integer argument} {
+        catch {r georadius nyc -73.9798091 40.7598464 10 km COUNT} e
+        set e
+    } {ERR*syntax*}
+
     test {GEORADIUS with COUNT DESC} {
         r georadius nyc -73.9798091 40.7598464 10 km COUNT 2 DESC
     } {{wtc one} q4}