diff --git a/src/WinTLSContext.cc b/src/WinTLSContext.cc
index 925afbb8..3ed88e45 100644
--- a/src/WinTLSContext.cc
+++ b/src/WinTLSContext.cc
@@ -44,6 +44,20 @@
 #include "message.h"
 #include "util.h"
 
+#ifndef SP_PROT_TLS1_1_CLIENT
+#define SP_PROT_TLS1_1_CLIENT 0x00000200
+#endif
+#ifndef SP_PROT_TLS1_1_SERVER
+#define SP_PROT_TLS1_1_SERVER 0x00000100
+#endif
+#ifndef SP_PROT_TLS1_2_CLIENT
+#define SP_PROT_TLS1_2_CLIENT 0x00000800
+#endif
+#ifndef SP_PROT_TLS1_2_SERVER
+#define SP_PROT_TLS1_2_SERVER 0x00000400
+#endif
+
+
 #ifndef SCH_USE_STRONG_CRYPTO
 #define SCH_USE_STRONG_CRYPTO 0x00400000
 #endif
diff --git a/src/WinTLSContext.h b/src/WinTLSContext.h
index a10d7f00..cd63bda7 100644
--- a/src/WinTLSContext.h
+++ b/src/WinTLSContext.h
@@ -48,19 +48,6 @@
 #include "TLSContext.h"
 #include "DlAbortEx.h"
 
-#ifndef SP_PROT_TLS1_1_CLIENT
-#define SP_PROT_TLS1_1_CLIENT 0x00000200
-#endif
-#ifndef SP_PROT_TLS1_1_SERVER
-#define SP_PROT_TLS1_1_SERVER 0x00000100
-#endif
-#ifndef SP_PROT_TLS1_2_CLIENT
-#define SP_PROT_TLS1_2_CLIENT 0x00000800
-#endif
-#ifndef SP_PROT_TLS1_2_SERVER
-#define SP_PROT_TLS1_2_SERVER 0x00000400
-#endif
-
 namespace aria2 {
 
 namespace wintls {