diff --git a/libasn1compiler/asn1c_misc.c b/libasn1compiler/asn1c_misc.c
index 0762850..a60553b 100644
--- a/libasn1compiler/asn1c_misc.c
+++ b/libasn1compiler/asn1c_misc.c
@@ -5,24 +5,28 @@
 #include <asn1fix_export.h>	/* other exportable stuff from libasn1fix */
 
 /*
- * Checks that the given string is not a reserved C/C++ keyword.
- * ISO/IEC 9899:1999 (C99), A.1.2
+ * Checks that the given string is not a reserved C/C++ keyword [1],[2].
+ * _* keywords not included, since asn1 identifiers cannot begin with hyphen [3]
+ * [1] ISO/IEC 9899:2011 (C11), 6.4.1
+ * [2] ISO/IEC 14882:2014 (C++14), 2.12
+ * [3] ISO/IEC 8824-1:2003 (asn1) 11.3
  */
 static char *res_kwd[] = {
-	"auto", "break", "case", "char", "const", "continue", "default",
-	"do", "double", "else", "enum", "extern", "float", "for", "goto",
-	"if", "inline", "int", "long", "register", "restrict", "return",
-	"short", "signed", "sizeof", "static", "struct", "switch", "typedef",
-	"union", "unsigned", "void", "volatile", "while",
-	"_Bool", "_Complex", "_Imaginary",
-	/* C++ */
-	"class", "explicit", "bool", "mutable", 
-	"template", "typeid", "typename", "and", "and_eq", 
-	"or", "or_eq", "xor", "xor_eq", "not", "not_eq",
-	"bitor", "compl", "bitand",
-	"const_cast", "dynamic_cast", "reinterpret_cast",
-	"static_cast", "true", "false", "namespace", "using",
-	"throw", "try", "catch"
+		/* C */
+	"auto", "break", "case", "char", "const", "continue", "default", "do",
+	"double", "else", "enum", "extern", "float", "for", "goto", "if",
+	"inline", "int", "long", "register", "restrict", "return", "short",
+	"signed", "sizeof", "static", "struct", "switch", "typedef", "union",
+	"unsigned", "void", "volatile", "while",
+		/* C++ */
+	"alignas", "alignof", "and", "and_eq", "asm", "bitand", "bitor", "bool",
+	"catch", "char16_t", "char32_t", "class", "compl", "const_cast",
+	"constexpr", "decltype", "delete", "delete", "dynamic_cast",
+	"explicit", "export", "false", "friend", "mutable", "namespace", "new",
+	"noexcept", "not", "not_eq", "nullptr", "operator", "or", "or_eq",
+	"private", "protected", "public", "reinterpret_cast", "static_assert",
+	"static_cast", "template", "this", "thread_local", "throw", "true", "try",
+	"typeid", "typename", "using", "virtual", "wchar_t", "xor", "xor_eq"
 };
 static int
 reserved_keyword(const char *str) {