diff --git a/src/system/libroot/posix/arch/x86/fenv.c b/src/system/libroot/posix/arch/x86/fenv.c
index b0c657b653..1884bc1444 100644
--- a/src/system/libroot/posix/arch/x86/fenv.c
+++ b/src/system/libroot/posix/arch/x86/fenv.c
@@ -207,5 +207,5 @@ __fedisableexcept(int mask)
 	return (~omask);
 }
 
-__weak_reference(__feenableexcept, feenableexcept);
-__weak_reference(__fedisableexcept, fedisableexcept);
+int feenableexcept(int) __attribute__((weak, alias("__feenableexcept")));
+int fedisableexcept(int) __attribute__((weak, alias("__fedisableexcept")));
diff --git a/src/system/libroot/posix/glibc/arch/generic/w_dremf.c b/src/system/libroot/posix/glibc/arch/generic/w_dremf.c
index b740ea304c..e040d986db 100644
--- a/src/system/libroot/posix/glibc/arch/generic/w_dremf.c
+++ b/src/system/libroot/posix/glibc/arch/generic/w_dremf.c
@@ -9,9 +9,9 @@
 #include "math_private.h"
 
 float
-__dremf(x, y)
-	float x, y;
+__dremf(float x, float y)
 {
 	return __remainderf(x, y);
 }
-weak_alias (__dremf, dremf)
+
+float dremf(float, float) __attribute__((weak, alias("__dremf")));