diff --git a/src/util/_impl/_find_eq.scad b/src/util/_impl/_find_eq.scad
index 35b1ec48..f2c2d0a8 100644
--- a/src/util/_impl/_find_eq.scad
+++ b/src/util/_impl/_find_eq.scad
@@ -1,7 +1,7 @@
 function _find_eq(lt, target, eq) = 
     is_undef(eq) ? (
             let(found = search([target], lt)[0])
-            found == [] ? - 1 : found
+            found == [] ? -1 : found
         ) : (
             let(
                 leng = len(lt),