diff --git a/Makefile b/Makefile
index 49531f3..1a3824d 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ else
 DBG_OPT := -Wl,-s
 endif
 
-CFLAGS := -Wall $(DBG_OPT) -I./include/
+CFLAGS := -Wall -D_WIN32_WINNT=0x0500 $(DBG_OPT) -I./include/
 CXXFLAGS := $(CFLAGS)
 
 VERSION := r$(shell svn info | grep Revision | sed -e 's/.*: //')
diff --git a/src/ipxwrapper.c b/src/ipxwrapper.c
index 8ec4ed1..b2f3123 100644
--- a/src/ipxwrapper.c
+++ b/src/ipxwrapper.c
@@ -80,6 +80,16 @@ BOOL WINAPI DllMain(HINSTANCE me, DWORD why, LPVOID res) {
 		log_printf(LOG_INFO, "IPXWrapper %s", version_string);
 		log_printf(LOG_INFO, "Compiled at %s", compile_time);
 		
+		if(!getenv("SystemRoot")) {
+			log_printf(LOG_WARNING, "SystemRoot is not set in the environment");
+			
+			char env[268] = "SystemRoot=";
+			GetSystemWindowsDirectory(env+11, 256);
+			
+			log_printf(LOG_INFO, "Setting SystemRoot to '%s'", env+11);
+			_putenv(env);
+		}
+		
 		if(!rclient_init(&g_rclient)) {
 			return FALSE;
 		}