diff --git a/include/vuk/runtime/CommandBuffer.hpp b/include/vuk/runtime/CommandBuffer.hpp
index 1a7347a2..3aa751b2 100644
--- a/include/vuk/runtime/CommandBuffer.hpp
+++ b/include/vuk/runtime/CommandBuffer.hpp
@@ -358,9 +358,7 @@ namespace vuk {
 		DomainFlagBits get_scheduled_domain() const;
 
 		/// @brief Gets the allocator associated with this object.
-		Allocator get_allocator() {
-			return *allocator;
-		}
+		Allocator get_allocator();
 
 		// command buffer state setting
 		// when a state is set it is persistent for a pass (similar to Vulkan dynamic state) - see documentation
diff --git a/src/runtime/vk/CommandBuffer.cpp b/src/runtime/vk/CommandBuffer.cpp
index 21747fc7..a54a778c 100644
--- a/src/runtime/vk/CommandBuffer.cpp
+++ b/src/runtime/vk/CommandBuffer.cpp
@@ -72,6 +72,10 @@ namespace vuk {
 		return stream->domain;
 	}
 
+	Allocator CommandBuffer::get_allocator() {
+		return *allocator;
+	}
+
 	CommandBuffer& CommandBuffer::set_descriptor_set_strategy(DescriptorSetStrategyFlags ds_strategy_flags) {
 		this->ds_strategy_flags = ds_strategy_flags;
 		return *this;