diff --git a/libs/libc/libc.csv b/libs/libc/libc.csv
index 52be9fd249..2d7c77585d 100644
--- a/libs/libc/libc.csv
+++ b/libs/libc/libc.csv
@@ -213,9 +213,9 @@
 "pthread_condattr_setclock","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_condattr_t *","clockid_t"
 "pthread_create","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_t *","FAR const pthread_attr_t *","pthread_startroutine_t","pthread_addr_t"
 "pthread_getname_np","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","pthread_t","char *","size_t"
-"pthread_getspecific","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","FAR void *","pthread_key_t"
-"pthread_key_create","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_key_t *","FAR void (*) (void *)|FAR void *"
-"pthread_key_delete","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","pthread_key_t"
+"pthread_getspecific","pthread.h","!defined(CONFIG_DISABLE_PTHREAD) && CONFIG_TLS_NELEM > 0","FAR void *","pthread_key_t"
+"pthread_key_create","pthread.h","!defined(CONFIG_DISABLE_PTHREAD) && CONFIG_TLS_NELEM > 0","int","FAR pthread_key_t *","FAR void (*) (void *)|FAR void *"
+"pthread_key_delete","pthread.h","!defined(CONFIG_DISABLE_PTHREAD) && CONFIG_TLS_NELEM > 0","int","pthread_key_t"
 "pthread_mutex_lock","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_mutex_t *"
 "pthread_mutexattr_destroy","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_mutexattr_t *"
 "pthread_mutexattr_getpshared","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_mutexattr_t *","FAR int *"
@@ -229,7 +229,7 @@
 "pthread_rwlock_rdlock","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_rwlock_t *"
 "pthread_rwlock_unlock","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","FAR pthread_rwlock_t *"
 "pthread_setname_np","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","pthread_t","const char *"
-"pthread_setspecific","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","int","pthread_key_t","FAR const void *"
+"pthread_setspecific","pthread.h","!defined(CONFIG_DISABLE_PTHREAD) && CONFIG_TLS_NELEM > 0","int","pthread_key_t","FAR const void *"
 "pthread_yield","pthread.h","!defined(CONFIG_DISABLE_PTHREAD)","void"
 "puts","stdio.h","defined(CONFIG_FILE_STREAM)","int","FAR const IPTR char *"
 "putwc","wchar.h","defined(CONFIG_FILE_STREAM)","wint_t","wchar_t","FAR FILE *"