diff --git a/include/etl/placement_new.h b/include/etl/placement_new.h
index 3efaffb9..d2aff1a7 100644
--- a/include/etl/placement_new.h
+++ b/include/etl/placement_new.h
@@ -37,7 +37,11 @@ SOFTWARE.
 // Figure out if we can use the standard library <new> header, if haven't already done so in etl_profile.h
 #if !defined(ETL_USING_STD_NEW)
   #if defined(__has_include)
-    #define ETL_USING_STD_NEW __has_include("new")
+    #if __has_include(<new>)
+      #define ETL_USING_STD_NEW 1
+    #else
+      #define ETL_USING_STD_NEW 0
+    #endif
   #elif (defined(ARDUINO) && defined(__AVR__))
     #define ETL_USING_STD_NEW 0
   #else
diff --git a/support/Release notes.txt b/support/Release notes.txt
index d7338d38..9dec768a 100644
--- a/support/Release notes.txt	
+++ b/support/Release notes.txt	
@@ -12,6 +12,7 @@ Fixed unordered container equality tests to match STL
 #583 Permit non-default-constructable hashes and key-equals
 #589 Add minmax_push.h/minmax_pop.h includes
 #584 unordered_set::const_iterator has incorrect value_type
+#593 Workaround for __has_include(<...>) and ICCAVR
 
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 20.33.0