diff --git a/include/fmt/format.h b/include/fmt/format.h
index 16b77fa5..537a80ce 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -66,7 +66,7 @@
 #if __cplusplus == 201103L || __cplusplus == 201402L
 #  if defined(__clang__)
 #    define FMT_FALLTHROUGH [[clang::fallthrough]]
-#  elif FMT_GCC_VERSION >= 700
+#  elif FMT_GCC_VERSION >= 700 && !defined(__PGI)
 #    define FMT_FALLTHROUGH [[gnu::fallthrough]]
 #  else
 #    define FMT_FALLTHROUGH