diff --git a/src/if_ruby.c b/src/if_ruby.c
index 3751025..9e58902 100644
--- a/src/if_ruby.c
+++ b/src/if_ruby.c
@@ -865,13 +865,11 @@
 vim_str2rb_enc_str(const char *s)
 {
 #if RUBY_VERSION >= 19
-    int isnum;
     long lval;
     char_u *sval;
     rb_encoding *enc;
 
-    isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
-    if (isnum == 0)
+    if (get_option_value((char_u *)"enc", &lval, &sval, 0) == gov_string)
     {
 	enc = rb_enc_find((char *)sval);
 	vim_free(sval);
@@ -886,14 +884,12 @@
 eval_enc_string_protect(const char *str, int *state)
 {
 #if RUBY_VERSION >= 19
-    int isnum;
     long lval;
     char_u *sval;
     rb_encoding *enc;
     VALUE v;
 
-    isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
-    if (isnum == 0)
+    if (get_option_value((char_u *)"enc", &lval, &sval, 0) == gov_string)
     {
 	enc = rb_enc_find((char *)sval);
 	vim_free(sval);