diff --git a/CMakeLists.txt b/CMakeLists.txt
index 69d9bd75595..6c13259290c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -197,7 +197,6 @@ if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
     add_compile_options(-Wno-user-defined-literals)
     add_compile_options(-Wno-atomic-alignment)
-    add_compile_options(-Wno-c99-designator)
     add_compile_options(-Wno-implicit-const-int-float-conversion)
     add_compile_options(-Wno-null-pointer-subtraction)
     add_compile_options(-Wno-tautological-constant-out-of-range-compare)
diff --git a/Userland/Applications/KeyboardMapper/KeyPositions.h b/Userland/Applications/KeyboardMapper/KeyPositions.h
index f07e264e2fb..debaec22229 100644
--- a/Userland/Applications/KeyboardMapper/KeyPositions.h
+++ b/Userland/Applications/KeyboardMapper/KeyPositions.h
@@ -21,6 +21,11 @@ struct KeyPosition {
 
 #define KEY_COUNT 63
 
+#ifdef __clang__
+#    pragma clang diagnostic push
+#    pragma clang diagnostic ignored "-Wc99-designator"
+#endif
+
 struct KeyPosition keys[KEY_COUNT] = {
     // clang-format off
     [ 0] = {     0,   0,  0,   0,   0, false,  0, ""},
@@ -93,3 +98,7 @@ struct KeyPosition keys[KEY_COUNT] = {
     [62] = {0xE01D, 689, 208,  74,  50, false,  0, "right ctrl"}
     // clang-format on
 };
+
+#ifdef __clang__
+#    pragma clang diagnostic pop
+#endif
diff --git a/Userland/Libraries/LibC/sys/ttydefaults.h b/Userland/Libraries/LibC/sys/ttydefaults.h
index 2db57a43b20..c7ccbf381e9 100644
--- a/Userland/Libraries/LibC/sys/ttydefaults.h
+++ b/Userland/Libraries/LibC/sys/ttydefaults.h
@@ -46,6 +46,11 @@
 #    endif
 #    include <sys/cdefs.h>
 
+#    ifdef __clang__
+#        pragma clang diagnostic push
+#        pragma clang diagnostic ignored "-Wc99-designator"
+#    endif
+
 __BEGIN_DECLS
 static const cc_t ttydefchars[NCCS] = {
     [VINTR] = CINTR,
@@ -66,5 +71,10 @@ static const cc_t ttydefchars[NCCS] = {
     [VLNEXT] = CLNEXT,
     [VEOL2] = CEOL2
 };
+
+#    ifdef __clang__
+#        pragma clang diagnostic pop
+#    endif
+
 __END_DECLS
 #endif