diff --git a/lcl/include/dbedit.inc b/lcl/include/dbedit.inc
index f9305980f6..b74461752f 100644
--- a/lcl/include/dbedit.inc
+++ b/lcl/include/dbedit.inc
@@ -132,6 +132,7 @@ begin
 // see also the comments in TDBMemo.KeyDown()
     VK_0..VK_9,
     VK_A..VK_Z,
+    VK_SPACE,
     VK_NUMPAD0..VK_DIVIDE,
     VK_OEM_1..VK_OEM_3,
     VK_OEM_4..VK_OEM_8:
diff --git a/lcl/include/dbmemo.inc b/lcl/include/dbmemo.inc
index 20243faa59..a8bfba4ac4 100644
--- a/lcl/include/dbmemo.inc
+++ b/lcl/include/dbmemo.inc
@@ -160,6 +160,7 @@ begin
 // and will cause the Memo content to change, leading to the issue #40985
     VK_0..VK_9,
     VK_A..VK_Z,
+    VK_SPACE,
     VK_NUMPAD0..VK_DIVIDE,
     VK_OEM_1..VK_OEM_3,
     VK_OEM_4..VK_OEM_8: