--- a/inst/@galois/convmtx.m
+++ b/inst/@galois/convmtx.m
@@ -39,9 +39,9 @@
 function b = convmtx (a, n)
 
   if (!isgalois (a))
-    error("convmtx: argument must be a galois variable");
+    error ("convmtx: argument must be a galois variable");
   endif
 
-  b = gf(convmtx(a.x,n), a.m, a.prim_poly);
+  b = gf (convmtx (a.x, n), a.m, a.prim_poly);
 
 endfunction