diff --git a/pwndbg/gdblib/regs.py b/pwndbg/gdblib/regs.py
index 6e97896e7..3ca63f170 100644
--- a/pwndbg/gdblib/regs.py
+++ b/pwndbg/gdblib/regs.py
@@ -94,6 +94,10 @@ class module(ModuleType):
 
         return item
 
+    def __contains__(self, reg):
+        regs = set(reg_sets[pwndbg.gdblib.arch.current]) | {"pc", "sp"}
+        return reg in regs
+
     def __iter__(self):
         regs = set(reg_sets[pwndbg.gdblib.arch.current]) | {"pc", "sp"}
         for item in regs: