diff --git a/include/trick/exec_proto.h b/include/trick/exec_proto.h
index d536c79e..607c16e5 100644
--- a/include/trick/exec_proto.h
+++ b/include/trick/exec_proto.h
@@ -74,6 +74,7 @@ extern "C" {
     int exec_set_version_date_tag(const char * tag) ;
     int exec_set_build_date(const char * date) ;
     int exec_set_current_version(const char * version) ;
+    void exec_set_rt_nap_stats(long long clock_time_before_rt_nap, long long clock_time_after_rt_nap) ;
 
     int exec_freeze(void) ;
     int exec_run(void) ;
diff --git a/trick_source/sim_services/Clock/Clock.cpp b/trick_source/sim_services/Clock/Clock.cpp
index 0b762415..020550d6 100644
--- a/trick_source/sim_services/Clock/Clock.cpp
+++ b/trick_source/sim_services/Clock/Clock.cpp
@@ -10,7 +10,6 @@ PROGRAMMERS:
 
 #include "trick/Clock.hh"
 #include "trick/exec_proto.h"
-#include "trick/exec_proto.hh"
 #include "trick/release.h"
 
 Trick::Clock * the_clock = NULL ;
@@ -93,7 +92,7 @@ long long Trick::Clock::clock_spin(long long req_time) {
             time_before_rt_nap = wall_clock_time() ;
             RELEASE();
             time_after_rt_nap = wall_clock_time() ;
-            exec_get_exec_cpp()->set_rt_nap_stats(time_before_rt_nap, time_after_rt_nap) ;
+            exec_set_rt_nap_stats(time_before_rt_nap, time_after_rt_nap) ;
         }
         curr_time = clock_time();
     }
diff --git a/trick_source/sim_services/Clock/test/Makefile b/trick_source/sim_services/Clock/test/Makefile
index fe58b277..5142578a 100644
--- a/trick_source/sim_services/Clock/test/Makefile
+++ b/trick_source/sim_services/Clock/test/Makefile
@@ -21,7 +21,7 @@ BASE_OBJECTS = ../object_${TRICK_HOST_CPU}/Clock.o\
                ../object_${TRICK_HOST_CPU}/clock_c_intf.o
 
 
-GETTIMEOFDAY_CLOCK_OBJECTS = ${BASE_OBJECTS} GetTimeOfDayClock_test.o ../object_${TRICK_HOST_CPU}/GetTimeOfDayClock.o exec_get_rt_nap_stub.o
+GETTIMEOFDAY_CLOCK_OBJECTS = ${BASE_OBJECTS} GetTimeOfDayClock_test.o ../object_${TRICK_HOST_CPU}/GetTimeOfDayClock.o exec_get_rt_nap_stub.o exec_set_rt_nap_stats.o
 
 # All tests produced by this Makefile.  Remember to add new tests you
 # created to the list.
diff --git a/trick_source/sim_services/Executive/Executive_c_intf.cpp b/trick_source/sim_services/Executive/Executive_c_intf.cpp
index 8e88f0c0..86198868 100644
--- a/trick_source/sim_services/Executive/Executive_c_intf.cpp
+++ b/trick_source/sim_services/Executive/Executive_c_intf.cpp
@@ -737,6 +737,17 @@ extern "C" const char * exec_get_current_version() {
     return NULL ;
 }
 
+/**
+ * @relates Trick::Executive
+ * @copydoc Trick::Executive::set_rt_nap_stats
+ * C wrapper for Trick::Executive::set_rt_nap_stats
+ */
+extern "C" void exec_set_rt_nap_stats(long long clock_time_before_rt_nap, long long clock_time_after_rt_nap) {
+    if ( the_exec != NULL ) {
+        the_exec->set_rt_nap_stats(clock_time_before_rt_nap, clock_time_before_rt_nap) ;
+    }
+}
+
 /**
  * @relates Trick::Executive
  * @userdesc Raise a signal on the main thread to terminate the simuation immediately.