diff --git a/src/libsodium/sodium/core.c b/src/libsodium/sodium/core.c
index 107d20c1..3ad2d1b2 100644
--- a/src/libsodium/sodium/core.c
+++ b/src/libsodium/sodium/core.c
@@ -215,14 +215,13 @@ sodium_set_misuse_handler(void (*handler)(void))
     return 0;
 }
 
-#ifdef _WIN32
+#if defined(_WIN32) && !defined(SODIUM_STATIC)
 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved) {
-    switch (fdwReason) {
-        case DLL_PROCESS_DETACH:
-            if (_sodium_lock_initialized == 2) {
-                DeleteCriticalSection(&_sodium_lock);
-            }
-            break;
+    (void) hinstDLL;
+    (void) lpReserved;
+
+    if (fdwReason == DLL_PROCESS_DETACH && _sodium_lock_initialized == 2) {
+        DeleteCriticalSection(&_sodium_lock);
     }
     return TRUE;
 }