diff --git a/build.d/targets/release.sh b/build.d/targets/release.sh
index 0f88987..3bb69f7 100755
--- a/build.d/targets/release.sh
+++ b/build.d/targets/release.sh
@@ -79,7 +79,7 @@ function release_build
     # Build distribution package
 
     build_target_invoke distribution build -s 10.5 -d 10.5 -c Release \
-                                           --kext=10.5 --kext=10.6 --kext=10.7 --kext="10.8->10.7" --kext=10.9 --kext="10.10->10.9" \
+                                           --kext=10.5 --kext=10.6 --kext="10.7->10.6" --kext="10.8->10.6" --kext=10.9 --kext="10.10->10.9" \
                                            --macfuse \
                                            --code-sign-identity="${BUILD_TARGET_OPTION_CODE_SIGN_IDENTITY}" \
                                            --product-sign-identity="${BUILD_TARGET_OPTION_PRODUCT_SIGN_IDENTITY}"
diff --git a/common/fuse_param.h b/common/fuse_param.h
index 6ad0818..8c22ede 100644
--- a/common/fuse_param.h
+++ b/common/fuse_param.h
@@ -125,23 +125,7 @@
  * File system interface
  */
 
-#ifdef KERNEL
-    /*
-     * The maximum supported I/O size on Mac OS X 10.6 and earlier is 16 MiB. Mac
-     * OS X 10.7 and later support up to 32 MiB.
-     */
-    #if VERSION_MAJOR < 11
-        #define FUSE_MAX_UPL_SIZE               4096
-    #else
-        #define FUSE_MAX_UPL_SIZE               8192
-    #endif
-#else
-    /*
-     * The maximum supported UPL size of the user-space library is independent
-     * from the FUSE kernel extension's deployment target.
-     */
-    #define FUSE_MAX_UPL_SIZE                   8192
-#endif
+#define FUSE_MAX_UPL_SIZE                       8192
 
 /*
  * This is the default block size of the virtual storage devices that are
diff --git a/kext b/kext
index 24009a2..ef8a804 160000
--- a/kext
+++ b/kext
@@ -1 +1 @@
-Subproject commit 24009a2616c11129e81880365099391aba5bf93f
+Subproject commit ef8a804e58bf3f82b82afe8fd0ed42034de27361