--- a/testing/mozbase/mozinfo/mozinfo/mozinfo.py	2015-02-25 19:25:46.000000000 +0100
+++ b/testing/mozbase/mozinfo/mozinfo/mozinfo.py	2015-08-21 21:40:15.722241182 +0200
@@ -96,7 +96,7 @@
     import errno
     PR_SET_SECCOMP = 22
     SECCOMP_MODE_FILTER = 2
-    ctypes.CDLL("libc.so.6", use_errno=True).prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, 0)
+    ctypes.CDLL(ctypes.util.find_library('c'), use_errno=True).prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, 0)
     info['has_sandbox'] = ctypes.get_errno() == errno.EFAULT
 else:
     info['has_sandbox'] = True