diff --git a/imgui.h b/imgui.h
index d126d25e1..61773dfe2 100644
--- a/imgui.h
+++ b/imgui.h
@@ -118,10 +118,13 @@ Index of this file:
 #endif
 #if defined(__clang__)
 #pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wold-style-cast"
-#if __has_warning("-Wzero-as-null-pointer-constant")
-#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+#if __has_warning("-Wunknown-warning-option")
+#pragma clang diagnostic ignored "-Wunknown-warning-option"         // warning: unknown warning group 'xxx'
 #endif
+#pragma clang diagnostic ignored "-Wunknown-pragmas"                // warning: unknown warning group 'xxx'
+#pragma clang diagnostic ignored "-Wold-style-cast"
+#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
+#pragma clang diagnostic ignored "-Wreserved-identifier"            // warning: identifier '_Xxx' is reserved because it starts with '_' followed by a capital letter
 #elif defined(__GNUC__)
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpragmas"          // warning: unknown option after '#pragma GCC diagnostic' kind
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index d52e8b95d..d3a332a17 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -63,6 +63,7 @@ Index of this file:
 #pragma clang diagnostic ignored "-Wreserved-id-macro"              // warning: macro name is a reserved identifier
 #pragma clang diagnostic ignored "-Wdouble-promotion"               // warning: implicit conversion from 'float' to 'double' when passing argument to function  // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
 #pragma clang diagnostic ignored "-Wimplicit-int-float-conversion"  // warning: implicit conversion from 'xxx' to 'float' may lose precision
+#pragma clang diagnostic ignored "-Wreserved-identifier"            // warning: identifier '_Xxx' is reserved because it starts with '_' followed by a capital letter
 #elif defined(__GNUC__)
 #pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
 #pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used