diff --git a/c/src/exec/posix/src/pthread.c b/c/src/exec/posix/src/pthread.c
index ff3171eb41..2137e97b99 100644
--- a/c/src/exec/posix/src/pthread.c
+++ b/c/src/exec/posix/src/pthread.c
@@ -20,7 +20,6 @@
 #include <rtems/posix/key.h>
 #include <rtems/posix/time.h>
 
-#define PTHREAD_MINIMUM_STACK_SIZE (STACK_MINIMUM_SIZE * 2)
 /*PAGE
  *
  *  The default pthreads attributes structure.
diff --git a/cpukit/posix/src/pthread.c b/cpukit/posix/src/pthread.c
index ff3171eb41..2137e97b99 100644
--- a/cpukit/posix/src/pthread.c
+++ b/cpukit/posix/src/pthread.c
@@ -20,7 +20,6 @@
 #include <rtems/posix/key.h>
 #include <rtems/posix/time.h>
 
-#define PTHREAD_MINIMUM_STACK_SIZE (STACK_MINIMUM_SIZE * 2)
 /*PAGE
  *
  *  The default pthreads attributes structure.