diff --git a/ide/packages/idedebugger/idedebuggerutils.pas b/ide/packages/idedebugger/idedebuggerutils.pas
index 0012225b3a..c22a6ea233 100644
--- a/ide/packages/idedebugger/idedebuggerutils.pas
+++ b/ide/packages/idedebugger/idedebuggerutils.pas
@@ -289,9 +289,16 @@ begin
     if InString then
       Continue;
 
-    if p^ in ['@', '^', '.', '+', '-', '*', '/', '(', ',', '=', '<', '>', '#', '$', '%', '&', '!'] then
+    if p^ in ['@', '.', '+', '-', '*', '/', '(', ',', '=', '<', '>', '#', '$', '%', '&', '!'] then
       MaybeBeforeRange := False  // after operator. A [1..5] would be a set of byte
 
+    else
+    if (p - s >= 2) and
+       (p[-2] in [#1..#32]) and (p[-1] in ['i', 'I']) and
+       (p^ in ['n', 'N']) and  (p[1] in [#1..#32])
+    then
+      MaybeBeforeRange := False  // after IN operator. A [1..5] would be a set of byte
+
     else
     if p^ in ['a'..'z', 'A'..'Z', '_', ')', ']'] then
       MaybeBeforeRange := True  // after identifier, or after ")" or "]"
diff --git a/ide/packages/idedebugger/test/TestIdeDebugger.lpi b/ide/packages/idedebugger/test/TestIdeDebugger.lpi
index 70833d27c3..921b4bc76a 100644
--- a/ide/packages/idedebugger/test/TestIdeDebugger.lpi
+++ b/ide/packages/idedebugger/test/TestIdeDebugger.lpi
@@ -154,6 +154,11 @@
         <IsPartOfProject Value="True"/>
         <UnitName Value="TestXmlOpts"/>
       </Unit>
+      <Unit>
+        <Filename Value="testvarious.pas"/>
+        <IsPartOfProject Value="True"/>
+        <UnitName Value="TestVarious"/>
+      </Unit>
     </Units>
   </ProjectOptions>
   <CompilerOptions>
diff --git a/ide/packages/idedebugger/test/TestIdeDebugger.lpr b/ide/packages/idedebugger/test/TestIdeDebugger.lpr
index 171768a6de..b325db1d72 100644
--- a/ide/packages/idedebugger/test/TestIdeDebugger.lpr
+++ b/ide/packages/idedebugger/test/TestIdeDebugger.lpr
@@ -3,7 +3,7 @@ program TestIdeDebugger;
 {$mode objfpc}{$H+}
 
 uses
-  Interfaces, Forms, GuiTestRunner, TestWatchResult, TestXmlOpts;
+  Interfaces, Forms, GuiTestRunner, TestWatchResult, TestXmlOpts, TestVarious;
 
 {$R *.res}
 
diff --git a/ide/packages/idedebugger/test/testvarious.pas b/ide/packages/idedebugger/test/testvarious.pas
new file mode 100644
index 0000000000..7fbc0c8346
--- /dev/null
+++ b/ide/packages/idedebugger/test/testvarious.pas
@@ -0,0 +1,54 @@
+unit TestVarious;
+
+{$mode objfpc}{$H+}
+{$INLINE off}
+
+interface
+
+uses
+  Classes, SysUtils, fpcunit, testutils, testregistry,
+  IdeDebuggerUtils,
+  LazLogger;
+
+type
+
+  { TTestIdeDebuggerVarious }
+
+  TTestIdeDebuggerVarious = class(TTestCase)
+  published
+    procedure TestExpressionForArrayElement;
+  end;
+
+implementation
+
+
+{ TTestIdeDebuggerVarious }
+
+procedure TTestIdeDebuggerVarious.TestExpressionForArrayElement;
+begin
+  AssertEquals('a',    'a[11]',    GetExpressionForArrayElement('a', 11));
+  AssertEquals('(a)',  '(a)[11]',  GetExpressionForArrayElement('(a)', 11));
+  AssertEquals('a[2]', 'a[2][11]', GetExpressionForArrayElement('a[2]', 11));
+
+  AssertEquals('(a * [1..22]) * b[3..33]',     '(a * [1..22]) * b[11]',     GetExpressionForArrayElement('(a * [1..22]) * b[3..33]', 11));
+  AssertEquals('(a in [1..22]) * b[3..33]',    '(a in [1..22]) * b[11]',    GetExpressionForArrayElement('(a in [1..22]) * b[3..33]', 11));
+  AssertEquals('( an [1..22]) * b[3..33]',     '( an [11]) * b[3..33]',      GetExpressionForArrayElement('( an [1..22]) * b[3..33]', 11));
+
+  AssertEquals('a[2..22]',          'a[11]',          GetExpressionForArrayElement('a[2..22]', 11));
+  AssertEquals('a[-2..22]',         'a[11]',          GetExpressionForArrayElement('a[-2..22]', 11));
+  AssertEquals('a[-22..-2]',        'a[-11]',         GetExpressionForArrayElement('a[-22..-2]', -11));
+  AssertEquals('a[2..22][3..33]',   'a[11][3..33]',   GetExpressionForArrayElement('a[2..22][3..33]', 11));
+  AssertEquals('a[2..22]*b[3..33]', 'a[11]*b[3..33]', GetExpressionForArrayElement('a[2..22]*b[3..33]', 11));
+  AssertEquals('Foo(a[2..22])',     'Foo(a[11])',     GetExpressionForArrayElement('Foo(a[2..22])', 11));
+
+  AssertEquals('PCellProps((TFpList((StringGrid1.FGrid.FCellArr.FCols.FList)^[0..3]).FList)^[0..3])^',
+    'PCellProps((TFpList((StringGrid1.FGrid.FCellArr.FCols.FList)^[2]).FList)^[0..3])^',
+    GetExpressionForArrayElement('PCellProps((TFpList((StringGrid1.FGrid.FCellArr.FCols.FList)^[0..3]).FList)^[0..3])^', 2)
+  );
+end;
+
+initialization
+
+  RegisterTest(TTestIdeDebuggerVarious);
+end.
+