diff --git a/c/typeprint.c b/c/typeprint.c
index 3af0605..64dddce 100644
--- a/c/typeprint.c
+++ b/c/typeprint.c
@@ -15,12 +15,12 @@ process(char *name)
         ts.tv_sec = 0;
         ts.tv_nsec = 10 * 1000000;
 
-        if (access(file, F_OK) = -1) {
+        if (access(file, F_OK) == -1) {
             fprintf(stderr, "[err] no such file or directory\n");
             return ENOENT;
         }
 
-        if (access(file, R_OK) = -1) {
+        if (access(file, R_OK) == -1) {
             fprintf(stderr, "[err] can't read file, permission denied\n");
             return EACCES;
         }