diff --git a/configure b/configure
index 882e0409d60401..bc996235c700b5 100755
--- a/configure
+++ b/configure
@@ -12979,13 +12979,6 @@ if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
 else
   have_largefile_support="no"
 fi
-case $ac_sys_system in #(
-  Emscripten) :
-    have_largefile_support="no"
- ;; #(
-  *) :
-     ;;
-esac
 if test "x$have_largefile_support" = xyes
 then :
 
diff --git a/configure.ac b/configure.ac
index c26e5c7fd1ddc0..47198c8722e872 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3172,10 +3172,6 @@ if test "$ac_cv_sizeof_off_t" -gt "$ac_cv_sizeof_long" -a \
 else
   have_largefile_support="no"
 fi
-dnl LFS does not work with Emscripten 3.1
-AS_CASE([$ac_sys_system],
-  [Emscripten], [have_largefile_support="no"]
-)
 AS_VAR_IF([have_largefile_support], [yes], [
   AC_DEFINE([HAVE_LARGEFILE_SUPPORT], [1],
   [Defined to enable large file support when an off_t is bigger than a long