diff --git a/std/dynamic_library.zig b/std/dynamic_library.zig
index 79e325b81e..3413788019 100644
--- a/std/dynamic_library.zig
+++ b/std/dynamic_library.zig
@@ -108,11 +108,12 @@ pub const LinuxDynLib = struct {
         const fd = try os.open(path, 0, os.O_RDONLY | os.O_CLOEXEC);
         errdefer os.close(fd);
 
+        // TODO remove this @intCast
         const size = @intCast(usize, (try os.fstat(fd)).size);
 
         const bytes = try os.mmap(
             null,
-            size,
+            mem.alignForward(size, mem.page_size),
             os.PROT_READ | os.PROT_EXEC,
             os.MAP_PRIVATE,
             fd,
diff --git a/test/standalone/load_dynamic_library/main.zig b/test/standalone/load_dynamic_library/main.zig
index 4c45ad6fde..a222f5b315 100644
--- a/test/standalone/load_dynamic_library/main.zig
+++ b/test/standalone/load_dynamic_library/main.zig
@@ -1,12 +1,12 @@
 const std = @import("std");
 
 pub fn main() !void {
-    const args = try std.os.argsAlloc(std.debug.global_allocator);
-    defer std.os.argsFree(std.debug.global_allocator, args);
+    const args = try std.process.argsAlloc(std.debug.global_allocator);
+    defer std.process.argsFree(std.debug.global_allocator, args);
 
     const dynlib_name = args[1];
 
-    var lib = try std.DynLib.open(std.debug.global_allocator, dynlib_name);
+    var lib = try std.DynLib.open(dynlib_name);
     defer lib.close();
 
     const addr = lib.lookup("add") orelse return error.SymbolNotFound;