diff --git a/tests/Makefile b/tests/Makefile
index c935b00..cba1143 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -1,5 +1,5 @@
 
-CXXFLAGS = -I.. -std=c++17 -W -Wall -Ofast -fno-exceptions -fno-rtti -march=native
+CXXFLAGS = -I.. -std=c++11 -W -Wall -Ofast -fno-exceptions -fno-rtti -march=native
 CXX = clang++ -stdlib=libc++
 #CXX = g++
 
diff --git a/wav.hh b/wav.hh
index 39043c4..9786502 100644
--- a/wav.hh
+++ b/wav.hh
@@ -206,7 +206,7 @@ public:
 		for (int n = 0; n < num; ++n) {
 			for (int c = 0; c < channels_; ++c) {
 				TYPE v = TYPE(offset) + TYPE(factor) * buf[stride * n + c];
-				writeLE(std::nearbyint(std::clamp(v, TYPE(min), TYPE(max))), bytes);
+				writeLE(std::nearbyint(std::min(std::max(v, TYPE(min)), TYPE(max))), bytes);
 			}
 		}
 	}