diff --git a/cheroot/_compat.py b/cheroot/_compat.py
index 0e4ed182b4..79899b9d1a 100644
--- a/cheroot/_compat.py
+++ b/cheroot/_compat.py
@@ -24,6 +24,9 @@
 IS_LINUX = SYS_PLATFORM == 'Linux'
 IS_MACOS = SYS_PLATFORM == 'Darwin'
 
+PLATFORM_ARCH = platform.machine()
+IS_PPC = PLATFORM_ARCH.startswith('ppc')
+
 
 if not six.PY2:
     def ntob(n, encoding='ISO-8859-1'):
diff --git a/cheroot/server.py b/cheroot/server.py
index 7aed63e50f..3c00164975 100644
--- a/cheroot/server.py
+++ b/cheroot/server.py
@@ -86,6 +86,7 @@
 
 from . import errors, __version__
 from ._compat import bton, ntou
+from ._compat import IS_PPC
 from .workers import threadpool
 from .makefile import MakeFile, StreamWriter
 
@@ -142,7 +143,7 @@
     which case the getsockopt() will hopefully fail. The arch
     specific value could be derived from platform.processor()
     """
-    socket.SO_PEERCRED = 17
+    socket.SO_PEERCRED = 21 if IS_PPC else 17
 
 
 LF = b'\n'