1 files changed, 2 insertions, 3 deletions

diff --git a/src/firejail/util.c b/src/firejail/util.c
index 918077235..a737f9d47 100644
--- a/src/firejail/util.c
+++ b/src/firejail/util.c
@@ -1276,14 +1276,13 @@ int has_handler(pid_t pid, int signal) {
                         char buf[BUFLEN];
                         while (fgets(buf, BUFLEN, fp)) {
                                 if (strncmp(buf, "SigCgt:", 7) == 0) {
-                                        char *ptr = buf + 7;
                                         unsigned long long val;
-                                        if (sscanf(ptr, "%llx", &val) != 1) {
+                                        if (sscanf(buf + 7, "%llx", &val) != 1) {
                                                 fprintf(stderr, "Error: cannot read /proc file\n");
                                                 exit(1);
                                         }
                                         val >>= (signal - 1);
-                                        val &= 1;
+                                        val &= 1ULL;
                                         fclose(fp);
                                         return val;  // 1 if process has a handler for the signal, else 0
                                 }