diff --git a/src/afs/VNOPS/afs_vnop_write.c b/src/afs/VNOPS/afs_vnop_write.c
index 9d582f0ced..c0672e83d9 100644
--- a/src/afs/VNOPS/afs_vnop_write.c
+++ b/src/afs/VNOPS/afs_vnop_write.c
@@ -185,7 +185,7 @@ afs_MemWrite(struct vcache *avc, struct uio *auio, int aio,
 	return (EFBIG);
     }
 #endif
-#ifdef AFS_VM_RDWR_ENV
+#if defined(AFS_VM_RDWR_ENV) && !defined(AFS_FAKEOPEN_ENV)
     /*
      * If write is implemented via VM, afs_FakeOpen() is called from the
      * high-level write op.
@@ -292,7 +292,7 @@ afs_MemWrite(struct vcache *avc, struct uio *auio, int aio,
 	}
 #endif
     }
-#ifndef	AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_FAKEOPEN_ENV)
     afs_FakeClose(avc, acred);
 #endif
     if (error && !avc->vc_error)
@@ -406,7 +406,7 @@ afs_UFSWrite(struct vcache *avc, struct uio *auio, int aio,
 	return (EFBIG);
     }
 #endif
-#ifdef	AFS_VM_RDWR_ENV
+#if defined(AFS_VM_RDWR_ENV) && !defined(AFS_FAKEOPEN_ENV)
     /*
      * If write is implemented via VM, afs_FakeOpen() is called from the
      * high-level write op.
@@ -601,7 +601,7 @@ afs_UFSWrite(struct vcache *avc, struct uio *auio, int aio,
 	}
 #endif
     }
-#ifndef	AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_FAKEOPEN_ENV)
     afs_FakeClose(avc, acred);
 #endif
     error = afs_CheckCode(error, &treq, 7);
diff --git a/src/config/param.i386_dfbsd_23.h b/src/config/param.i386_dfbsd_23.h
index 677ef8f0ca..dd8283af22 100644
--- a/src/config/param.i386_dfbsd_23.h
+++ b/src/config/param.i386_dfbsd_23.h
@@ -9,6 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 
 #ifndef UKERNEL
diff --git a/src/config/param.i386_fbsd_70.h b/src/config/param.i386_fbsd_70.h
index b624759324..ba22cf48c6 100644
--- a/src/config/param.i386_fbsd_70.h
+++ b/src/config/param.i386_fbsd_70.h
@@ -9,7 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
-
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 #ifndef UKERNEL
 /* This section for kernel libafs compiles only */
diff --git a/src/config/param.i386_fbsd_71.h b/src/config/param.i386_fbsd_71.h
index 7bd6b60aa5..664d70ae0f 100644
--- a/src/config/param.i386_fbsd_71.h
+++ b/src/config/param.i386_fbsd_71.h
@@ -9,6 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 
 #ifndef UKERNEL
diff --git a/src/config/param.i386_fbsd_80.h b/src/config/param.i386_fbsd_80.h
index 002db22e66..8128275510 100644
--- a/src/config/param.i386_fbsd_80.h
+++ b/src/config/param.i386_fbsd_80.h
@@ -9,6 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 
 #ifndef UKERNEL
diff --git a/src/config/param.i386_fbsd_81.h b/src/config/param.i386_fbsd_81.h
index cf62adc9e3..b2469a7c30 100644
--- a/src/config/param.i386_fbsd_81.h
+++ b/src/config/param.i386_fbsd_81.h
@@ -9,6 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 
 #ifndef UKERNEL
diff --git a/src/config/param.i386_fbsd_90.h b/src/config/param.i386_fbsd_90.h
index 28a38eb4fa..46fd4047f9 100644
--- a/src/config/param.i386_fbsd_90.h
+++ b/src/config/param.i386_fbsd_90.h
@@ -9,6 +9,7 @@
 #define AFS_HAVE_FFS        1	/* Use system's ffs. */
 #define AFS_HAVE_STATVFS    1	/* System doesn't support statvfs */
 #define AFS_VM_RDWR_ENV	    1	/* read/write implemented via VM */
+#define AFS_FAKEOPEN_ENV    1   /* call afs_FakeOpen as if !AFS_VM_RDWR */
 
 
 #ifndef UKERNEL