diff --git a/src/sighnd.c b/src/sighnd.c
index 505e79a..cd66ab7 100644
--- a/src/sighnd.c
+++ b/src/sighnd.c
@@ -35,6 +35,16 @@
 #include <errno.h>
 #include <glib.h>
 
+/* taken from glibc unistd.h and fixes musl */
+#ifndef TEMP_FAILURE_RETRY
+#define TEMP_FAILURE_RETRY(expression) \
+  (__extension__                                                              \
+    ({ long int __result;                                                     \
+       do __result = (long int) (expression);                                 \
+       while (__result == -1L && errno == EINTR);                             \
+       __result; }))
+#endif
+
 /* ========================================================================= *
  * SIGNAL HANDING FUNCTIONALITY
  * ========================================================================= */
diff --git a/src/ticker.c b/src/ticker.c
index 7ff6ca9..2f97f47 100644
--- a/src/ticker.c
+++ b/src/ticker.c
@@ -662,10 +662,7 @@ time_t ticker_get_monotonic(void)
 
 static inline int is_leap_year(int y)
 {
-  // use macro from time.h
-  return __isleap(y);
-
-  //return (y % 4 == 0) && ((y % 100 != 0) || (y % 400 == 0));
+  return (y % 4 == 0) && ((y % 100 != 0) || (y % 400 == 0));
 }
 
 /* ------------------------------------------------------------------------- *