diff --git a/backends/swiften/main.cpp b/backends/swiften/main.cpp
index f0acdb6dab291246e0a9469e6038ed16dfe6dd13..6c111464872c99efdf7f1a3b807cd00241d43d41 100644
--- a/backends/swiften/main.cpp
+++ b/backends/swiften/main.cpp
@@ -227,10 +227,12 @@ class SwiftenPlugin : public NetworkPlugin, Swift::XMPPParserClient {
 #ifndef WIN32
 #ifndef __FreeBSD__
 #ifndef __MACH__
+#if defined (__GLIBC__)
 			// force returning of memory chunks allocated by libxml2 to kernel
 			malloc_trim(0);
 #endif
 #endif
+#endif
 #endif
 		}