diff --git a/c/src/exec/libcsupport/src/open.c b/c/src/exec/libcsupport/src/open.c
index 32fd4076e6..7efa18e829 100644
--- a/c/src/exec/libcsupport/src/open.c
+++ b/c/src/exec/libcsupport/src/open.c
@@ -143,6 +143,7 @@ int open(
    *  returned by successful path evaluation.
    */
 
+  iop->offset     = 0;
   iop->handlers   = temp_loc.handlers;
   iop->file_info  = temp_loc.node_access;
   iop->flags     |= rtems_libio_fcntl_flags( flags );
diff --git a/c/src/lib/libc/open.c b/c/src/lib/libc/open.c
index 32fd4076e6..7efa18e829 100644
--- a/c/src/lib/libc/open.c
+++ b/c/src/lib/libc/open.c
@@ -143,6 +143,7 @@ int open(
    *  returned by successful path evaluation.
    */
 
+  iop->offset     = 0;
   iop->handlers   = temp_loc.handlers;
   iop->file_info  = temp_loc.node_access;
   iop->flags     |= rtems_libio_fcntl_flags( flags );
diff --git a/cpukit/libcsupport/src/open.c b/cpukit/libcsupport/src/open.c
index 32fd4076e6..7efa18e829 100644
--- a/cpukit/libcsupport/src/open.c
+++ b/cpukit/libcsupport/src/open.c
@@ -143,6 +143,7 @@ int open(
    *  returned by successful path evaluation.
    */
 
+  iop->offset     = 0;
   iop->handlers   = temp_loc.handlers;
   iop->file_info  = temp_loc.node_access;
   iop->flags     |= rtems_libio_fcntl_flags( flags );