diff --git a/Alc/vector.h b/Alc/vector.h
index a7df54f4..1b69d6a7 100644
--- a/Alc/vector.h
+++ b/Alc/vector.h
@@ -7,7 +7,7 @@
 
 namespace al {
 
-template<typename T, size_t alignment=DEF_ALIGN>
+template<typename T, size_t alignment=alignof(T)>
 using vector = std::vector<T, al::allocator<T, alignment>>;
 
 } // namespace al
diff --git a/OpenAL32/alSource.cpp b/OpenAL32/alSource.cpp
index 6d4daecd..b2878b8e 100644
--- a/OpenAL32/alSource.cpp
+++ b/OpenAL32/alSource.cpp
@@ -1284,7 +1284,7 @@ ALboolean SetSourceiv(ALsource *Source, ALCcontext *Context, SourceProp prop, co
             if(buffer != nullptr)
             {
                 /* Add the selected buffer to a one-item queue */
-                auto newlist = static_cast<ALbufferlistitem*>(al_calloc(DEF_ALIGN,
+                auto newlist = static_cast<ALbufferlistitem*>(al_calloc(alignof(void*),
                     ALbufferlistitem::Sizeof(1u)));
                 newlist->next.store(nullptr, std::memory_order_relaxed);
                 newlist->max_samples = buffer->SampleLen;
@@ -3185,13 +3185,13 @@ START_API_FUNC
 
         if(!BufferListStart)
         {
-            BufferListStart = static_cast<ALbufferlistitem*>(al_calloc(DEF_ALIGN,
+            BufferListStart = static_cast<ALbufferlistitem*>(al_calloc(alignof(void*),
                 ALbufferlistitem::Sizeof(1u)));
             BufferList = BufferListStart;
         }
         else
         {
-            auto item = static_cast<ALbufferlistitem*>(al_calloc(DEF_ALIGN,
+            auto item = static_cast<ALbufferlistitem*>(al_calloc(alignof(void*),
                 ALbufferlistitem::Sizeof(1u)));
             BufferList->next.store(item, std::memory_order_relaxed);
             BufferList = item;
@@ -3290,7 +3290,7 @@ START_API_FUNC
     }
 
     std::unique_lock<std::mutex> buflock{device->BufferLock};
-    auto BufferListStart = static_cast<ALbufferlistitem*>(al_calloc(DEF_ALIGN,
+    auto BufferListStart = static_cast<ALbufferlistitem*>(al_calloc(alignof(void*),
         ALbufferlistitem::Sizeof(nb)));
     BufferList = BufferListStart;
     BufferList->next.store(nullptr, std::memory_order_relaxed);
diff --git a/common/almalloc.cpp b/common/almalloc.cpp
index f7af5bf3..fbb84479 100644
--- a/common/almalloc.cpp
+++ b/common/almalloc.cpp
@@ -4,6 +4,7 @@
 #include "almalloc.h"
 
 #include <cassert>
+#include <cstddef>
 #include <cstdlib>
 #include <cstring>
 #ifdef HAVE_MALLOC_H
@@ -28,7 +29,7 @@
 void *al_malloc(size_t alignment, size_t size)
 {
     assert((alignment & (alignment-1)) == 0);
-    alignment = std::max(alignment, sizeof(void*));
+    alignment = std::max(alignment, alignof(std::max_align_t));
 
 #if defined(HAVE_ALIGNED_ALLOC)
     size = (size+(alignment-1))&~(alignment-1);
@@ -79,7 +80,7 @@ void al_free(void *ptr) noexcept
 
 size_t al_get_page_size() noexcept
 {
-    static size_t psize = 0;
+    static size_t psize{0u};
     if(UNLIKELY(!psize))
     {
 #ifdef HAVE_SYSCONF
@@ -97,7 +98,7 @@ size_t al_get_page_size() noexcept
             psize = sysinfo.dwPageSize;
         }
 #endif
-        if(!psize) psize = DEF_ALIGN;
+        if(!psize) psize = alignof(std::max_align_t);
     }
     return psize;
 }
diff --git a/common/almalloc.h b/common/almalloc.h
index 74aa4afe..7b74b659 100644
--- a/common/almalloc.h
+++ b/common/almalloc.h
@@ -7,8 +7,6 @@
 #include <limits>
 #include <algorithm>
 
-/* Minimum alignment required by posix_memalign. */
-#define DEF_ALIGN sizeof(void*)
 
 void *al_malloc(size_t alignment, size_t size);
 void *al_calloc(size_t alignment, size_t size);