diff --git a/src/evalfunc.c b/src/evalfunc.c
index aefb1bf..9e384da 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -4763,7 +4763,7 @@
 	}
     }
 
-    if (argvars[1].v_type != VAR_UNKNOWN && tv_get_number(&argvars[1]) != 0)
+    if (argvars[1].v_type != VAR_UNKNOWN && tv_get_bool(&argvars[1]))
 	// return whether feature could ever be enabled
 	rettv->vval.v_number = x;
     else
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index eb608c5..dcc8087 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -1516,6 +1516,10 @@
   set wildignore&
 enddef
 
+def Test_has()
+  assert_equal(1, has('eval', true))
+enddef
+
 def Fibonacci(n: number): number
   if n < 2
     return n
diff --git a/src/version.c b/src/version.c
index 69aecec..70f736d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1606,
+/**/
     1605,
 /**/
     1604,