diff --git a/cmsis-pack/GorgonMeducer.perf_counter.2.1.0-dev2.pack b/cmsis-pack/GorgonMeducer.perf_counter.2.1.0-dev2.pack
index 20b3ac8..3e686a8 100644
Binary files a/cmsis-pack/GorgonMeducer.perf_counter.2.1.0-dev2.pack and b/cmsis-pack/GorgonMeducer.perf_counter.2.1.0-dev2.pack differ
diff --git a/lib/perf_counter.h b/lib/perf_counter.h
index 7720cb4..f1b02d8 100644
--- a/lib/perf_counter.h
+++ b/lib/perf_counter.h
@@ -317,8 +317,8 @@ __asm(".global __ensure_systick_wrapper\n\t");
                     __perf_counter_printf__(                                    \
                         "--------------------------------------------\r\n");    \
                     __perf_counter_printf__(                                    \
-                        __STR " total cycle count: %d [%08x]\r\n",              \
-                            (int)_, (int)_);                                    \
+                        __STR " total cycle count: %ld [%016lx]\r\n",           \
+                            (long)_, (long)_);                                  \
                 } else {                                                        \
                     __VA_ARGS__                                                 \
                 };                                                              \
diff --git a/perf_counter.h b/perf_counter.h
index 7720cb4..f1b02d8 100644
--- a/perf_counter.h
+++ b/perf_counter.h
@@ -317,8 +317,8 @@ __asm(".global __ensure_systick_wrapper\n\t");
                     __perf_counter_printf__(                                    \
                         "--------------------------------------------\r\n");    \
                     __perf_counter_printf__(                                    \
-                        __STR " total cycle count: %d [%08x]\r\n",              \
-                            (int)_, (int)_);                                    \
+                        __STR " total cycle count: %ld [%016lx]\r\n",           \
+                            (long)_, (long)_);                                  \
                 } else {                                                        \
                     __VA_ARGS__                                                 \
                 };                                                              \