diff --git a/include/cyclone/runtime.h b/include/cyclone/runtime.h
index 40733e57..6469d7cf 100644
--- a/include/cyclone/runtime.h
+++ b/include/cyclone/runtime.h
@@ -266,11 +266,6 @@ void dispatch(void *data, int argc, function_type func, object clo, object cont,
 void dispatch_va(void *data, int argc, function_type_va func, object clo, object cont, object args);
 void do_dispatch(void *data, int argc, function_type func, object clo, object *buffer);
 
-/* Global variables. */
-extern long no_gcs; /* Count the number of GC's. */
-extern long no_major_gcs; /* Count the number of GC's. */
-
-/* Define Lisp constants we need. */
 extern const object boolean_t;
 extern const object boolean_f;
 extern const object quote_void;
diff --git a/runtime.c b/runtime.c
index 668eecad..7e79201f 100644
--- a/runtime.c
+++ b/runtime.c
@@ -94,9 +94,6 @@ void Cyc_check_bounds(void *data, const char *label, int len, int index) {
 
 /* Global variables. */
 static gc_heap_root *Cyc_heap;
-long no_gcs = 0; /* Count the number of GC's. */
-long no_major_gcs = 0; /* Count the number of GC's. */
-
 object Cyc_global_variables = NULL;
 int _cyc_argc = 0;
 char **_cyc_argv = NULL;