diff --git a/src/evalfunc.c b/src/evalfunc.c
index 61dce74..ec347c1 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -48,6 +48,7 @@
 static void f_assert_exception(typval_T *argvars, typval_T *rettv);
 static void f_assert_fails(typval_T *argvars, typval_T *rettv);
 static void f_assert_false(typval_T *argvars, typval_T *rettv);
+static void f_assert_inrange(typval_T *argvars, typval_T *rettv);
 static void f_assert_match(typval_T *argvars, typval_T *rettv);
 static void f_assert_notequal(typval_T *argvars, typval_T *rettv);
 static void f_assert_notmatch(typval_T *argvars, typval_T *rettv);
@@ -460,6 +461,7 @@
     {"assert_exception", 1, 2, f_assert_exception},
     {"assert_fails",	1, 2, f_assert_fails},
     {"assert_false",	1, 2, f_assert_false},
+    {"assert_inrange",	2, 3, f_assert_inrange},
     {"assert_match",	2, 3, f_assert_match},
     {"assert_notequal",	2, 3, f_assert_notequal},
     {"assert_notmatch",	2, 3, f_assert_notmatch},
@@ -1278,6 +1280,15 @@
 }
 
 /*
+ * "assert_inrange(lower, upper[, msg])" function
+ */
+    static void
+f_assert_inrange(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    assert_inrange(argvars);
+}
+
+/*
  * "assert_match(pattern, actual[, msg])" function
  */
     static void