diff --git a/src/debug.c b/src/debug.c
index 245eb90..013571c 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -22,4 +22,10 @@ void DUMP_PROXY_CHAIN(proxy_data *pchain, unsigned int count) {
 	}
 }
 
+#else
+
+// Do not allow this translation unit to end up empty
+// for non-DEBUG builds, to satisfy ISO C standards.
+typedef int __appease_iso_compilers__;
+
 #endif