diff --git a/Changes b/Changes
index 0cc1c41b2..4f1a4c165 100644
--- a/Changes
+++ b/Changes
@@ -13,6 +13,8 @@ Verilator 4.217 devel
 
 **Minor:**
 
+* Fix MSWIN compile error (#2681). [Unai Martinez-Corral]
+
 
 Verilator 4.216 2021-12-05
 ==========================
diff --git a/src/V3File.cpp b/src/V3File.cpp
index 47cc857dd..19a777b26 100644
--- a/src/V3File.cpp
+++ b/src/V3File.cpp
@@ -335,7 +335,7 @@ class VInFilterImp final {
 #ifdef INFILTER_PIPE
     pid_t m_pid = 0;  // fork() process id
 #else
-    const int m_pid = 0;  // fork() process id - always zero as disabled
+    int m_pid = 0;  // fork() process id - always zero as disabled
 #endif
     bool m_pidExited = false;
     int m_pidStatus = 0;