diff --git a/src/libCom/osi/os/RTEMS/osdPoolStatus.c b/src/libCom/osi/os/RTEMS/osdPoolStatus.c
index 863b6b861..b01983185 100644
--- a/src/libCom/osi/os/RTEMS/osdPoolStatus.c
+++ b/src/libCom/osi/os/RTEMS/osdPoolStatus.c
@@ -6,7 +6,7 @@
 /*
  * osiSufficentSpaceInPool ()
  */
-epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ()
+epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ( size_t contiguousBlockSize )
 {
-    return (malloc_free_space() > 100000);
+    return (malloc_free_space() > 100000 + contiguousBlockSize);
 }
diff --git a/src/libCom/osi/os/WIN32/osdPoolStatus.c b/src/libCom/osi/os/WIN32/osdPoolStatus.c
index 59e410fbc..81db00f5a 100644
--- a/src/libCom/osi/os/WIN32/osdPoolStatus.c
+++ b/src/libCom/osi/os/WIN32/osdPoolStatus.c
@@ -8,7 +8,7 @@
  * @@@@@ not implemented @@@@@
  *
  */
-epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ()
+epicsShareFunc int epicsShareAPI osiSufficentSpaceInPool ( size_t contiguousBlockSize )
 {
     return 1;
 }