diff --git a/src/common/rendering/gl_load/gl_system.h b/src/common/rendering/gl_load/gl_system.h
index 0ad2f3303..6b40d73c0 100644
--- a/src/common/rendering/gl_load/gl_system.h
+++ b/src/common/rendering/gl_load/gl_system.h
@@ -14,7 +14,7 @@
 #include <errno.h>
 #include <stdarg.h>
 #include <signal.h>
-#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
+#if !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__DragonFly__)
 #include <malloc.h>
 #endif
 #include <time.h>
diff --git a/src/common/rendering/vulkan/thirdparty/vk_mem_alloc/vk_mem_alloc.h b/src/common/rendering/vulkan/thirdparty/vk_mem_alloc/vk_mem_alloc.h
index 53ce163bf..30f2494a7 100644
--- a/src/common/rendering/vulkan/thirdparty/vk_mem_alloc/vk_mem_alloc.h
+++ b/src/common/rendering/vulkan/thirdparty/vk_mem_alloc/vk_mem_alloc.h
@@ -2229,7 +2229,7 @@ remove them if not needed.
 #include <mutex> // for std::mutex
 #include <atomic> // for std::atomic
 
-#if !defined(_WIN32) && !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
+#if !defined(_WIN32) && !defined(__APPLE__) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__DragonFly__)
     #include <malloc.h> // for aligned_alloc()
 #endif
 
diff --git a/src/common/utility/m_alloc.cpp b/src/common/utility/m_alloc.cpp
index d1f34c324..8ab7b6fcc 100644
--- a/src/common/utility/m_alloc.cpp
+++ b/src/common/utility/m_alloc.cpp
@@ -38,7 +38,7 @@
 #elif defined(__APPLE__)
 #include <stdlib.h>
 #include <malloc/malloc.h>
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__DragonFly__)
 #include <stdlib.h>
 #else
 #include <malloc.h>
diff --git a/src/common/utility/m_alloc.h b/src/common/utility/m_alloc.h
index 76c4947bc..14e9cbb9a 100644
--- a/src/common/utility/m_alloc.h
+++ b/src/common/utility/m_alloc.h
@@ -40,7 +40,7 @@
 #if defined(__APPLE__)
 #include <malloc/malloc.h>
 #define _msize(p)				malloc_size(p)
-#elif defined(__solaris__) || defined(__OpenBSD__)
+#elif defined(__solaris__) || defined(__OpenBSD__) || defined(__DragonFly__)
 #define _msize(p)				(*((size_t*)(p)-1))
 #elif !defined(_WIN32)
 #include <malloc.h>