diff --git a/libunwind/src/config.h b/libunwind/src/config.h
index f017403fa2234..6014a37e27212 100644
--- a/libunwind/src/config.h
+++ b/libunwind/src/config.h
@@ -75,7 +75,8 @@
   #define _LIBUNWIND_EXPORT
   #define _LIBUNWIND_HIDDEN
 #else
-  #if !defined(__ELF__) && !defined(__MACH__) && !defined(_AIX)
+  #if !defined(__ELF__) && !defined(__MACH__) && !defined(_AIX) &&             \
+      !defined(__wasm__)
     #define _LIBUNWIND_EXPORT __declspec(dllexport)
     #define _LIBUNWIND_HIDDEN
   #else