3 files changed, 6 insertions, 6 deletions
diff --git a/nuttx/graphics/nxmu/nx_block.c b/nuttx/graphics/nxmu/nx_block.c
index 2f069f096..3a051f9d7 100644
--- a/nuttx/graphics/nxmu/nx_block.c
+++ b/nuttx/graphics/nxmu/nx_block.c
@@ -111,8 +111,8 @@ int nx_block(NXWINDOW hwnd, FAR void *arg)
 #ifdef CONFIG_DEBUG
   if (!hwnd)
     {
-      errno = EINVAL;
-      return NULL;
+      set_errno(EINVAL);
+      return ERROR;
     }
 #endif
 
diff --git a/nuttx/graphics/nxmu/nxmu_sendclient.c b/nuttx/graphics/nxmu/nxmu_sendclient.c
index 8b7f12104..a59fa2363 100644
--- a/nuttx/graphics/nxmu/nxmu_sendclient.c
+++ b/nuttx/graphics/nxmu/nxmu_sendclient.c
@@ -93,9 +93,9 @@ int nxmu_sendclient(FAR struct nxfe_conn_s *conn, FAR const void *msg,
   /* Sanity checking */
 
 #ifdef CONFIG_DEBUG
-  if (!conn || conn->swrmq)
+  if (!conn || !conn->swrmq)
     {
-      errno = EINVAL;
+      set_errno(EINVAL);
       return ERROR;
     }
 #endif
diff --git a/nuttx/graphics/nxmu/nxmu_sendserver.c b/nuttx/graphics/nxmu/nxmu_sendserver.c
index 7007b81da..03ece4e7f 100644
--- a/nuttx/graphics/nxmu/nxmu_sendserver.c
+++ b/nuttx/graphics/nxmu/nxmu_sendserver.c
@@ -93,9 +93,9 @@ int nxmu_sendserver(FAR struct nxfe_conn_s *conn, FAR const void *msg,
   /* Sanity checking */
 
 #ifdef CONFIG_DEBUG
-  if (!conn || conn->cwrmq)
+  if (!conn || !conn->cwrmq)
     {
-      errno = EINVAL;
+      set_errno(EINVAL);
       return ERROR;
     }
 #endif