diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a8e2a259..5e0bc9fcd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,7 +88,7 @@ endmacro ()
 if (UNIX)
   list(APPEND CMAKE_REQUIRED_LIBRARIES m)
 endif ()
-check_funcs(atexit mprotect sysconf getpagesize mmap isatty roundf)
+check_funcs(atexit mprotect sysconf getpagesize mmap isatty)
 check_include_file(unistd.h HAVE_UNISTD_H)
 if (${HAVE_UNISTD_H})
   add_definitions(-DHAVE_UNISTD_H)
diff --git a/meson.build b/meson.build
index c6d260d80..29988f880 100644
--- a/meson.build
+++ b/meson.build
@@ -64,7 +64,6 @@ check_funcs = [
   ['getpagesize'],
   ['mmap'],
   ['isatty'],
-  ['roundf'],
 ]
 
 m_dep = cpp.find_library('m', required: false)