diff --git a/src/buffer.c b/src/buffer.c
index a46e30e..6e3fa55 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -1898,7 +1898,7 @@
 #ifdef FEAT_SPELL
     clear_string_option(&buf->b_s.b_p_spc);
     clear_string_option(&buf->b_s.b_p_spf);
-    vim_free(buf->b_s.b_cap_prog);
+    vim_regfree(buf->b_s.b_cap_prog);
     buf->b_s.b_cap_prog = NULL;
     clear_string_option(&buf->b_s.b_p_spl);
 #endif
@@ -2246,7 +2246,7 @@
 			match = buf->b_fnum;	/* remember first match */
 		    }
 
-		vim_free(prog);
+		vim_regfree(prog);
 		if (match >= 0)			/* found one match */
 		    break;
 	    }
@@ -2355,14 +2355,14 @@
 		*file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
 		if (*file == NULL)
 		{
-		    vim_free(prog);
+		    vim_regfree(prog);
 		    if (patc != pat)
 			vim_free(patc);
 		    return FAIL;
 		}
 	    }
 	}
-	vim_free(prog);
+	vim_regfree(prog);
 	if (count)		/* match(es) found, break here */
 	    break;
     }