diff --git a/src/Sema.zig b/src/Sema.zig
index 2cd834862a..6feb679f4b 100644
--- a/src/Sema.zig
+++ b/src/Sema.zig
@@ -7253,7 +7253,15 @@ fn analyzeCall(
             }),
             .func => func_val.toIntern(),
             .ptr => |ptr| switch (ptr.addr) {
-                .decl => |decl| mod.declPtr(decl).val.toIntern(),
+                .decl => |decl| blk: {
+                    const func_val_ptr = mod.declPtr(decl).val.toIntern();
+                    const intern_index = mod.intern_pool.indexToKey(func_val_ptr);
+                    if (intern_index == .extern_func or (intern_index == .variable and intern_index.variable.is_extern))
+                        return sema.fail(block, call_src, "{s} call of extern function pointer", .{
+                            @as([]const u8, if (is_comptime_call) "comptime" else "inline"),
+                        });
+                    break :blk func_val_ptr;
+                },
                 else => {
                     assert(callee_ty.isPtrAtRuntime(mod));
                     return sema.fail(block, call_src, "{s} call of function pointer", .{
diff --git a/test/cases/compile_errors/invalid_extern_function_call.zig b/test/cases/compile_errors/invalid_extern_function_call.zig
new file mode 100644
index 0000000000..640f68efb4
--- /dev/null
+++ b/test/cases/compile_errors/invalid_extern_function_call.zig
@@ -0,0 +1,16 @@
+const x = @extern(*const fn() callconv(.C) void, .{ .name = "foo" });
+
+pub fn entry0() void {
+    comptime x();
+}
+
+pub fn entry1() void {
+    @call(.always_inline, x, .{});
+}
+
+// error
+// backend=stage2
+// target=native
+//
+// :4:15: error: comptime call of extern function pointer
+// :8:5: error: inline call of extern function pointer