diff --git a/cryptoapi.c b/cryptoapi.c
index 8fb53871..3365cd7a 100644
--- a/cryptoapi.c
+++ b/cryptoapi.c
@@ -470,5 +470,7 @@ int SSL_CTX_use_CryptoAPI_certificate(SSL_CTX *ssl_ctx, const char *cert_prop)
 }
 
 #else
+#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
 static void dummy (void) {}
+#endif
 #endif				/* WIN32 */
diff --git a/ieproxy.c b/ieproxy.c
index 89977a82..30998704 100644
--- a/ieproxy.c
+++ b/ieproxy.c
@@ -139,7 +139,8 @@ LPCTSTR getIeHttpProxy()
     return(NULL);
   }
 }
-
 #else
+#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
 static void dummy (void) {}
+#endif
 #endif				/* WIN32 */
diff --git a/perf.c b/perf.c
index a149c07d..67ea9580 100644
--- a/perf.c
+++ b/perf.c
@@ -287,5 +287,7 @@ perf_print_state (int lev)
 }
 
 #else
+#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
 static void dummy(void) {}
 #endif
+#endif
diff --git a/pkcs11.c b/pkcs11.c
index e06a2ed7..d90ac968 100644
--- a/pkcs11.c
+++ b/pkcs11.c
@@ -982,5 +982,7 @@ cleanup:
 }
 
 #else
+#ifdef _MSC_VER  /* Dummy function needed to avoid empty file compiler warning in Microsoft VC */
 static void dummy (void) {}
+#endif
 #endif /* ENABLE_PKCS11 */