1 files changed, 2 insertions, 1 deletions
diff --git a/test/std/containers/unord/unord.multimap/rehash.pass.cpp b/test/std/containers/unord/unord.multimap/rehash.pass.cpp
index d36dc42e262d2..5ef21d3bc4cef 100644
--- a/test/std/containers/unord/unord.multimap/rehash.pass.cpp
+++ b/test/std/containers/unord/unord.multimap/rehash.pass.cpp
@@ -19,6 +19,7 @@
 #include <string>
 #include <cassert>
 #include <cfloat>
+#include <cmath>
 
 #include "min_allocator.h"
 
@@ -62,7 +63,7 @@ void test(const C& c)
     assert(i->second == "four");
     assert(std::distance(c.begin(), c.end()) == c.size());
     assert(std::distance(c.cbegin(), c.cend()) == c.size());
-    assert(fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
+    assert(std::fabs(c.load_factor() - (float)c.size()/c.bucket_count()) < FLT_EPSILON);
 }
 
 int main()