diff --git a/examples/callbacks/Makefile b/examples/callbacks/Makefile
new file mode 100644
index 00000000..3321e61c
--- /dev/null
+++ b/examples/callbacks/Makefile
@@ -0,0 +1,17 @@
+all: calls
+
+sys.o: sys.c
+	cc -c sys.c
+
+calls.c: calls.scm
+	cyclone -d calls.scm
+
+calls: sys.o calls.c
+	cc calls.c  -O2 -Wall -I/usr/local/include -c -o calls.o
+	cc calls.o  /usr/local/share/cyclone/scheme/cyclone/common.o  /usr/local/share/cyclone/scheme/base.o  /usr/local/share/cyclone/srfi/18.o  /usr/local/share/cyclone/scheme/write.o  -pthread -lcyclone -lck -lm -lcyclonebn -ldl  -O2 -fPIC -Wall -Wno-shift-negative-value -Wno-unused-command-line-argument -I/usr/local/include -L/usr/local/lib -Wl,--export-dynamic -o calls
+
+
+
+.PHONY: clean
+clean:
+	rm -f *.o calls.c calls
diff --git a/examples/callbacks/calls.scm b/examples/callbacks/calls.scm
new file mode 100644
index 00000000..e3cce89c
--- /dev/null
+++ b/examples/callbacks/calls.scm
@@ -0,0 +1,22 @@
+(import (scheme base)
+        (scheme write)
+        (srfi 18))
+
+;;(include-c-header "sys.c")
+
+(define *done* #f)
+(define *dummy signal-done) ;; Hack to prevent optimizing-out signal-done
+
+(define (signal-done obj)
+  (write `(Called from C set *done* to ,obj))
+  (newline)
+  (set! *done* obj)
+  #t)
+
+(define (wait)
+  (thread-sleep! 1)
+  (if *done*
+      #t
+      (wait)))
+
+(wait)
diff --git a/examples/callbacks/sys.c b/examples/callbacks/sys.c
new file mode 100644
index 00000000..0d22ed92
--- /dev/null
+++ b/examples/callbacks/sys.c
@@ -0,0 +1,6 @@
+#include "cyclone/types.h"
+
+extern object __glo_signal_91done;
+void call_scm(object obj)
+{
+}