diff --git a/include/types.h b/include/types.h
index 1cc61ef43..d6fbd14ef 100644
--- a/include/types.h
+++ b/include/types.h
@@ -47,6 +47,8 @@ typedef uint64_t u64;
 
 #if defined (_WIN)
 typedef LARGE_INTEGER     hc_timer_t;
+#elif defined(__APPLE__) && defined(MISSING_CLOCK_GETTIME)
+typedef struct timeval    hc_timer_t;
 #else
 typedef struct timespec   hc_timer_t;
 #endif
diff --git a/src/Makefile b/src/Makefile
index 5a2ff193c..ae491b6f5 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -92,6 +92,7 @@ ifeq ($(UNAME),Darwin)
 CC                      := clang
 # the sed -i option of macOS requires a parameter for the backup file (we just use "")
 SED_IN_PLACE            := -i ""
+PROD_VERS               := $(shell sw_vers -productVersion | cut -d. -f2)
 endif
 
 ifeq ($(UNAME),FreeBSD)
@@ -215,6 +216,11 @@ endif # FreeBSD
 ifeq ($(UNAME),Darwin)
 export MACOSX_DEPLOYMENT_TARGET=10.9
 CFLAGS_NATIVE           := $(CFLAGS)
+
+ifeq ($(shell test $(PROD_VERS) -le 11; echo $$?), 0)
+CFLAGS_NATIVE           += -DMISSING_CLOCK_GETTIME
+endif
+
 LFLAGS_NATIVE           := $(LFLAGS)
 LFLAGS_NATIVE           += -framework OpenCL
 LFLAGS_NATIVE           += -lpthread
diff --git a/src/timer.c b/src/timer.c
index 01aa86e10..415514456 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -33,7 +33,11 @@ inline double hc_timer_get (hc_timer_t a)
 
 inline void hc_timer_set (hc_timer_t* a)
 {
+  #if defined(__APPLE__) && defined(MISSING_CLOCK_GETTIME)
+  gettimeofday (a, NULL);
+  #else
   clock_gettime (CLOCK_MONOTONIC, a);
+  #endif
 }
 
 inline double hc_timer_get (hc_timer_t a)
@@ -42,6 +46,9 @@ inline double hc_timer_get (hc_timer_t a)
 
   hc_timer_set (&hr_tmp);
 
+  #if defined(__APPLE__) && defined(MISSING_CLOCK_GETTIME)
+  return (double) (((hr_tmp.tv_sec - (a).tv_sec) * 1000) + ((double) (hr_tmp.tv_usec - (a).tv_usec) / 1000));
+  #else
   hc_timer_t s;
 
   s.tv_sec  = hr_tmp.tv_sec  - a.tv_sec;
@@ -56,6 +63,7 @@ inline double hc_timer_get (hc_timer_t a)
   double r = ((double) s.tv_sec * 1000) + ((double) s.tv_nsec / 1000000);
 
   return r;
+  #endif
 }
 
 #endif