diff --git a/generate-bindings.py b/generate-bindings.py
index 60fd688..e6afb8f 100644
--- a/generate-bindings.py
+++ b/generate-bindings.py
@@ -12,7 +12,10 @@ for line in src:
 def is_c_decl(line):
     for fn in ['wiringPiISR','wiringPiSetupPiFace','wiringPiSetupPiFaceForGpioProg']:
         if fn in line:
-            return False
+            if 'wiringPiISRCancel' in line:
+                return True
+            else:
+                return False
     for prefix in ['extern','void','int','uint8_t']:
         if line.startswith(prefix):
             return True