diff --git a/configure.ac b/configure.ac
index 5c00aca..eb78060 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,6 @@ PLATFORM="unknown"
 AS_CASE([$host_os],
     [freebsd*], [PLATFORM="freebsd"],
     [openbsd*], [PLATFORM="openbsd"],
-    [darwin*], [PLATFORM="osx"],
     [cygwin], [PLATFORM="cygwin"],
     [PLATFORM="nix"])