diff --git a/compiler/semstmts.nim b/compiler/semstmts.nim
index ba88a6359b..07aaf0ecaf 100644
--- a/compiler/semstmts.nim
+++ b/compiler/semstmts.nim
@@ -2035,6 +2035,8 @@ proc evalInclude(c: PContext, n: PNode): PNode =
   for i in 0 ..< sonsLen(n):
     var imp: PNode
     let it = n.sons[i]
+    if it.kind == nkInfix and it.len == 3 and it[0].ident.s != "/":
+      localError(c.config, it.info, "Cannot use '" & it[0].ident.s & "' in 'include'.")
     if it.kind == nkInfix and it.len == 3 and it[2].kind == nkBracket:
       let sep = it[0]
       let dir = it[1]
diff --git a/tests/modules/tincludeas.nim b/tests/modules/tincludeas.nim
new file mode 100644
index 0000000000..b82e38b149
--- /dev/null
+++ b/tests/modules/tincludeas.nim
@@ -0,0 +1,6 @@
+discard """
+  errormsg: "Cannot use 'as' in 'include'."
+  line: 6
+"""
+
+include foobar as foo