diff --git a/src/tools.c b/src/tools.c
index 3a7b65c..d14286c 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -4806,7 +4806,11 @@
 	if (ret)
 		*size = sym ? sym->st_size : 0;
 #else
+#if defined(__sun)
+	ret = dladdr((void *)addr, dli);
+#else
 	ret = dladdr(addr, dli);
+#endif
 	*size = 0;
 #endif
 	return ret;