diff --git a/build/VStudio/winfsp_dll.vcxproj b/build/VStudio/winfsp_dll.vcxproj
index d5361b80..58cb0f3b 100644
--- a/build/VStudio/winfsp_dll.vcxproj
+++ b/build/VStudio/winfsp_dll.vcxproj
@@ -34,6 +34,7 @@
     <ClInclude Include="..\..\inc\winfsp\winfsp.hpp" />
     <ClInclude Include="..\..\src\dll\fuse3\library.h" />
     <ClInclude Include="..\..\src\dll\fuse\library.h" />
+    <ClInclude Include="..\..\src\dll\fuse\shared.h" />
     <ClInclude Include="..\..\src\dll\library.h" />
     <ClInclude Include="..\..\src\shared\minimal.h" />
   </ItemGroup>
diff --git a/build/VStudio/winfsp_dll.vcxproj.filters b/build/VStudio/winfsp_dll.vcxproj.filters
index db769319..2ef3f38a 100644
--- a/build/VStudio/winfsp_dll.vcxproj.filters
+++ b/build/VStudio/winfsp_dll.vcxproj.filters
@@ -77,6 +77,9 @@
     <ClInclude Include="..\..\src\dll\fuse3\library.h">
       <Filter>Source\fuse3</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\dll\fuse\shared.h">
+      <Filter>Source\fuse</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\dll\library.c">
diff --git a/src/dll/fuse/fuse.c b/src/dll/fuse/fuse.c
index d9dbe953..3f67a237 100644
--- a/src/dll/fuse/fuse.c
+++ b/src/dll/fuse/fuse.c
@@ -383,7 +383,7 @@ static NTSTATUS fsp_fuse_svcstart(FSP_SERVICE *Service, ULONG argc, PWSTR *argv)
 
         /* this should always fail with ENOSYS or EINVAL */
         err = f->ops.readlink("/", buf, sizeof buf);
-        f->has_symlinks = -ENOSYS != err;
+        f->has_symlinks = -enosys(f->env) != err;
     }
 
     /* the FSD does not currently limit these VolumeParams fields; do so here! */
diff --git a/src/dll/fuse/library.h b/src/dll/fuse/library.h
index 96e7c962..5d840ce8 100644
--- a/src/dll/fuse/library.h
+++ b/src/dll/fuse/library.h
@@ -19,6 +19,7 @@
 #define WINFSP_DLL_FUSE_LIBRARY_H_INCLUDED
 
 #include <dll/library.h>
+#include <dll/fuse/shared.h>
 #include <fuse/fuse.h>
 #include <fuse/fuse_opt.h>
 
diff --git a/src/dll/fuse/shared.h b/src/dll/fuse/shared.h
new file mode 100644
index 00000000..1e214323
--- /dev/null
+++ b/src/dll/fuse/shared.h
@@ -0,0 +1,23 @@
+/**
+ * @file dll/fuse/shared.h
+ *
+ * @copyright 2015-2018 Bill Zissimopoulos
+ */
+/*
+ * This file is part of WinFsp.
+ *
+ * You can redistribute it and/or modify it under the terms of the GNU
+ * General Public License version 3 as published by the Free Software
+ * Foundation.
+ *
+ * Licensees holding a valid commercial license may use this file in
+ * accordance with the commercial license agreement provided with the
+ * software.
+ */
+
+#ifndef WINFSP_DLL_FUSE_SHARED_H_INCLUDED
+#define WINFSP_DLL_FUSE_SHARED_H_INCLUDED
+
+#define enosys(env)                     ('C' == (env)->environment ? 88 : 40)
+
+#endif
diff --git a/src/dll/fuse3/library.h b/src/dll/fuse3/library.h
index 5d5983e5..459721ef 100644
--- a/src/dll/fuse3/library.h
+++ b/src/dll/fuse3/library.h
@@ -19,6 +19,7 @@
 #define WINFSP_DLL_FUSE3_LIBRARY_H_INCLUDED
 
 #include <dll/library.h>
+#include <dll/fuse/shared.h>
 #include <fuse/fuse.h>
 #undef FUSE_H_
 #undef FUSE_COMMON_H_