diff --git a/runtime/include/util.h b/runtime/include/util.h
index d2b6be6..0f4f1a9 100644
--- a/runtime/include/util.h
+++ b/runtime/include/util.h
@@ -2,7 +2,7 @@
 #define SFRT_UTIL_H
 
 /**
- * Get CPU time in cycles using the Intel instruction util__rdtsc
+ * Get CPU time in cycles using the Intel instruction rdtsc
  * @return CPU time in cycles
  **/
 static unsigned long long int
diff --git a/runtime/src/env.c b/runtime/src/env.c
index 7eb2580..21516f8 100644
--- a/runtime/src/env.c
+++ b/runtime/src/env.c
@@ -190,7 +190,7 @@ env_cos(double d)
 }
 
 INLINE unsigned long long
-env_util__rdtsc(void)
+env_rdtsc(void)
 {
 	return util__rdtsc();
 }
diff --git a/runtime/tests/fibonacci/get_time.h b/runtime/tests/fibonacci/get_time.h
index 90abb77..6b7ffb8 100644
--- a/runtime/tests/fibonacci/get_time.h
+++ b/runtime/tests/fibonacci/get_time.h
@@ -17,7 +17,7 @@ get_time()
   unsigned long long int ret = 0;
   unsigned int cycles_lo;
   unsigned int cycles_hi;
-  __asm__ volatile ("util__rdtsc" : "=a" (cycles_lo), "=d" (cycles_hi));
+  __asm__ volatile ("rdtsc" : "=a" (cycles_lo), "=d" (cycles_hi));
   ret = (unsigned long long int)cycles_hi << 32 | cycles_lo;
 
   return ret;