diff --git a/.clang-format b/.clang-format
index bd1caad1..82348ea9 100644
--- a/.clang-format
+++ b/.clang-format
@@ -20,7 +20,7 @@ AlwaysBreakBeforeMultilineStrings: false
 AlwaysBreakTemplateDeclarations: true
 BinPackArguments: true
 BinPackParameters: true
-BraceWrapping:     
+BraceWrapping:
   AfterClass:      true
   AfterControlStatement: true
   AfterEnum:       true
@@ -54,11 +54,11 @@ DerivePointerAlignment: false
 DisableFormat:   false
 ExperimentalAutoDetectBinPacking: false
 FixNamespaceComments: true
-ForEachMacros:   
+ForEachMacros:
   - foreach
   - Q_FOREACH
   - BOOST_FOREACH
-IncludeCategories: 
+IncludeCategories:
   - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
     Priority:        2
   - Regex:           '^(<|"(gtest|gmock|isl|json)/)'
@@ -102,7 +102,7 @@ SpacesInCStyleCastParentheses: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
 Standard:        Cpp11
-TabWidth:        8
+TabWidth:        4
 UseTab:          Never
 ...