diff --git a/winbuild/MakefileBuild.vc b/winbuild/MakefileBuild.vc
index f1f2d6965c..7eef64cdcd 100644
--- a/winbuild/MakefileBuild.vc
+++ b/winbuild/MakefileBuild.vc
@@ -306,7 +306,7 @@ SSH2        = static
 
 !IFDEF USE_SSH2
 SSH2_CFLAGS = /DHAVE_LIBSSH2 /DHAVE_LIBSSH2_H /DLIBSSH2_WIN32 /DLIBSSH2_LIBRARY /DUSE_LIBSSH2
-SSH2_CFLAGS = $(SSH2_CFLAGS) /I$(SSH2_INC_DIR)
+SSH2_CFLAGS = $(SSH2_CFLAGS) /I"$(SSH2_INC_DIR)"
 !ENDIF
 
 
@@ -327,7 +327,7 @@ SSH        = $(WITH_SSH)
 
 !IFDEF USE_SSH
 SSH_CFLAGS = /DHAVE_LIBSSH /DHAVE_LIBSSH_LIBSSH_H /DLIBSSH_WIN32 /DLIBSSH_LIBRARY /DUSE_LIBSSH /DCURL_USE_LIBSSH
-SSH_CFLAGS = $(SSH_CFLAGS) /I$(SSH_INC_DIR)
+SSH_CFLAGS = $(SSH_CFLAGS) /I"$(SSH_INC_DIR)"
 !ENDIF