diff --git a/pyproject.toml b/pyproject.toml
index be89b742c..c97919f4a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -91,7 +91,6 @@ default.extend-ignore-re = [
 
 [tool.typos.default.extend-identifiers]
 IPPROTO_ND = "IPPROTO_ND"
-ERROR_INVALID_PARMETER = "ERROR_INVALID_PARMETER"
 xn--caf-dma = "xn--caf-dma"
 mis-nested = "misnested"
 
diff --git a/src/trio/_core/_windows_cffi.py b/src/trio/_core/_windows_cffi.py
index 575fcb560..4aef8ddc8 100644
--- a/src/trio/_core/_windows_cffi.py
+++ b/src/trio/_core/_windows_cffi.py
@@ -420,7 +420,7 @@ class ErrorCodes(enum.IntEnum):
     ERROR_OPERATION_ABORTED = 995
     ERROR_ABANDONED_WAIT_0 = 735
     ERROR_INVALID_HANDLE = 6
-    ERROR_INVALID_PARMETER = 87
+    ERROR_INVALID_PARAMETER = 87
     ERROR_NOT_FOUND = 1168
     ERROR_NOT_SOCKET = 10038