diff --git a/include/cmath b/include/cmath
index 608b9151f..725515ea4 100644
--- a/include/cmath
+++ b/include/cmath
@@ -386,7 +386,6 @@ using ::tanf;
 using ::tanh;
 using ::tanhf;
 
-#ifndef _LIBCPP_MSVCRT
 using ::acosh;
 using ::acoshf;
 using ::asinh;
@@ -395,7 +394,6 @@ using ::atanh;
 using ::atanhf;
 using ::cbrt;
 using ::cbrtf;
-#endif
 
 using ::copysign;
 using ::copysignf;
@@ -439,10 +437,8 @@ using ::lround;
 using ::lroundf;
 #endif // _LIBCPP_MSVCRT
 
-#ifndef _LIBCPP_MSVCRT
 using ::nan;
 using ::nanf;
-#endif // _LIBCPP_MSVCRT
 
 #ifndef _LIBCPP_MSVCRT
 using ::nearbyint;
@@ -491,13 +487,11 @@ using ::sinhl;
 using ::sqrtl;
 using ::tanl;
 
-#ifndef _LIBCPP_MSVCRT
 using ::tanhl;
 using ::acoshl;
 using ::asinhl;
 using ::atanhl;
 using ::cbrtl;
-#endif  // !_LIBCPP_MSVCRT
 
 using ::copysignl;
 
diff --git a/include/cstdio b/include/cstdio
index 801348837..35941ce35 100644
--- a/include/cstdio
+++ b/include/cstdio
@@ -121,11 +121,9 @@ using ::fscanf;
 using ::snprintf;
 using ::sprintf;
 using ::sscanf;
-#ifndef _LIBCPP_MSVCRT
 using ::vfprintf;
 using ::vfscanf;
 using ::vsscanf;
-#endif // _LIBCPP_MSVCRT
 using ::vsnprintf;
 using ::vsprintf;
 using ::fgetc;
diff --git a/include/cwchar b/include/cwchar
index 52dde9e18..d268e8bbd 100644
--- a/include/cwchar
+++ b/include/cwchar
@@ -123,11 +123,9 @@ using ::fwscanf;
 using ::swprintf;
 using ::vfwprintf;
 using ::vswprintf;
-#ifndef _LIBCPP_MSVCRT
 using ::swscanf;
 using ::vfwscanf;
 using ::vswscanf;
-#endif // _LIBCPP_MSVCRT
 using ::fgetwc;
 using ::fgetws;
 using ::fputwc;
@@ -137,10 +135,8 @@ using ::getwc;
 using ::putwc;
 using ::ungetwc;
 using ::wcstod;
-#ifndef _LIBCPP_MSVCRT
 using ::wcstof;
 using ::wcstold;
-#endif // _LIBCPP_MSVCRT
 using ::wcstol;
 #ifndef _LIBCPP_HAS_NO_LONG_LONG
 using ::wcstoll;
@@ -182,9 +178,7 @@ using ::wcsrtombs;
 
 #ifndef _LIBCPP_HAS_NO_STDIN
 using ::getwchar;
-#ifndef _LIBCPP_MSVCRT
 using ::vwscanf;
-#endif // _LIBCPP_MSVCRT
 using ::wscanf;
 #endif