diff --git a/testfiles/pgfmath-gh1123.lvt b/testfiles/pgfmath-gh1123.lvt
index 0bb7f1f92..d0325fa0f 100644
--- a/testfiles/pgfmath-gh1123.lvt
+++ b/testfiles/pgfmath-gh1123.lvt
@@ -21,9 +21,9 @@
 \BEGINTEST{/pgf/declare function, space(s) in arg list}
   \pgfkeys{
     /pgf/declare function={
-      funcA( \x,\y) = sqrt(\x^2 + \y^2);
-      funcB( \x, \y) = sqrt(\x^2 + \y^2);
-      funcX(\x,\y) = sqrt(\x^2 + \y^2);
+      funcA( \x,\y) = sqrt((\x)^2 + (\y)^2);
+      funcB( \x, \y) = sqrt((\x)^2 + (\y)^2);
+      funcX(\x,\y) = sqrt((\x)^2 + (\y)^2);
     }
   }
   \ASSERTPGFMATHFUNCTIONS{funcA}{funcX}