diff --git a/dlls/jsproxy/Makefile.in b/dlls/jsproxy/Makefile.in
index 07f1fb53bc9..3b75db41b8d 100644
--- a/dlls/jsproxy/Makefile.in
+++ b/dlls/jsproxy/Makefile.in
@@ -2,6 +2,8 @@ MODULE    = jsproxy.dll
 IMPORTS   = uuid oleaut32 ole32 ws2_32
 IMPORTLIB = jsproxy
 
+EXTRADLLFLAGS = -mno-cygwin
+
 C_SRCS = \
 	main.c
 
diff --git a/dlls/jsproxy/main.c b/dlls/jsproxy/main.c
index 13f34b20a00..905d2d93c16 100644
--- a/dlls/jsproxy/main.c
+++ b/dlls/jsproxy/main.c
@@ -16,9 +16,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#include "config.h"
-#include "wine/port.h"
-
 #include <stdarg.h>
 #include <sys/types.h>
 
@@ -35,7 +32,6 @@
 #include "activscp.h"
 #include "wine/debug.h"
 #include "wine/heap.h"
-#include "wine/unicode.h"
 
 static HINSTANCE instance;
 
@@ -275,7 +271,7 @@ static HRESULT WINAPI dispex_GetNameSpaceParent(
 static HRESULT WINAPI dispex_GetDispID(
     IDispatchEx *iface, BSTR name, DWORD flags, DISPID *id )
 {
-    if (!strcmpW( name, dns_resolveW ))
+    if (!lstrcmpW( name, dns_resolveW ))
     {
         *id = DISPID_GLOBAL_DNSRESOLVE;
         return S_OK;
@@ -299,9 +295,9 @@ static char *get_computer_name( COMPUTER_NAME_FORMAT format )
     return ret;
 }
 
-static void printf_addr( const WCHAR *fmt, WCHAR *buf, struct sockaddr_in *addr )
+static void printf_addr( const WCHAR *fmt, WCHAR *buf, SIZE_T size, struct sockaddr_in *addr )
 {
-    sprintfW( buf, fmt,
+    swprintf( buf, size, fmt,
               (unsigned int)(ntohl( addr->sin_addr.s_addr ) >> 24 & 0xff),
               (unsigned int)(ntohl( addr->sin_addr.s_addr ) >> 16 & 0xff),
               (unsigned int)(ntohl( addr->sin_addr.s_addr ) >> 8 & 0xff),
@@ -333,7 +329,7 @@ static HRESULT dns_resolve( const WCHAR *hostname, VARIANT *result )
             freeaddrinfo( ai );
             return S_FALSE;
         }
-        printf_addr( fmtW, addr, (struct sockaddr_in *)elem->ai_addr );
+        printf_addr( fmtW, addr, ARRAY_SIZE(addr), (struct sockaddr_in *)elem->ai_addr );
         freeaddrinfo( ai );
         V_VT( result ) = VT_BSTR;
         V_BSTR( result ) = SysAllocString( addr );
@@ -412,7 +408,7 @@ static HRESULT WINAPI site_GetItemInfo(
     IActiveScriptSite *iface, LPCOLESTR name, DWORD mask,
     IUnknown **item, ITypeInfo **type_info )
 {
-    if (!strcmpW( name, global_funcsW ) && mask == SCRIPTINFO_IUNKNOWN)
+    if (!lstrcmpW( name, global_funcsW ) && mask == SCRIPTINFO_IUNKNOWN)
     {
         *item = (IUnknown *)&global_dispex;
         return S_OK;
@@ -488,9 +484,9 @@ static BSTR include_pac_utils( const WCHAR *script )
     data = LoadResource( hmod, rsrc );
 
     len = MultiByteToWideChar( CP_ACP, 0, data, size, NULL, 0 );
-    if (!(ret = SysAllocStringLen( NULL, len + strlenW( script ) + 1 ))) return NULL;
+    if (!(ret = SysAllocStringLen( NULL, len + lstrlenW( script ) + 1 ))) return NULL;
     MultiByteToWideChar( CP_ACP, 0, data, size, ret, len );
-    strcpyW( ret + len, script );
+    lstrcpyW( ret + len, script );
     return ret;
 }