diff --git a/usr.bin/xargs/tests/regress.n2147483647.out b/usr.bin/xargs/tests/regress.n2147483647.out
new file mode 100644
--- /dev/null
+++ b/usr.bin/xargs/tests/regress.n2147483647.out
@@ -0,0 +1 @@
+quick brown fox jumped over the lazy dog
diff --git a/usr.bin/xargs/tests/regress.sh b/usr.bin/xargs/tests/regress.sh
--- a/usr.bin/xargs/tests/regress.sh
+++ b/usr.bin/xargs/tests/regress.sh
@@ -5,6 +5,7 @@
 REGRESSION_START($1)
 
 REGRESSION_TEST(`normal', `xargs echo The <${SRCDIR}/regress.in')
+REGRESSION_TEST(`n2147483647', `xargs -n2147483647 <${SRCDIR}/regress.in')
 REGRESSION_TEST(`I', `xargs -I% echo The % % % %% % % <${SRCDIR}/regress.in')
 REGRESSION_TEST(`J', `xargs -J% echo The % again. <${SRCDIR}/regress.in')
 REGRESSION_TEST(`L', `xargs -L3 echo <${SRCDIR}/regress.in')
diff --git a/usr.bin/xargs/xargs.c b/usr.bin/xargs/xargs.c
--- a/usr.bin/xargs/xargs.c
+++ b/usr.bin/xargs/xargs.c
@@ -257,7 +257,7 @@
 	 * the maximum arguments to be read from stdin and the trailing
 	 * NULL.
 	 */
-	linelen = 1 + argc + nargs + 1;
+	linelen = 1 + argc + (size_t)nargs + 1;
 	if ((av = bxp = malloc(linelen * sizeof(char *))) == NULL)
 		errx(1, "malloc failed");