diff --git a/libavutil/vulkan.c b/libavutil/vulkan.c
index 2cfec5d00a..7ad938b047 100644
--- a/libavutil/vulkan.c
+++ b/libavutil/vulkan.c
@@ -1482,8 +1482,10 @@ int ff_vk_shader_init(FFVulkanContext *s, FFVulkanShader *shd, const char *name,
     GLSLC(0, #extension GL_EXT_shader_explicit_arithmetic_types : require     );
     GLSLC(0, #extension GL_EXT_control_flow_attributes : require              );
     if ((s->extensions & FF_VK_EXT_DEBUG_UTILS) &&
-        (s->extensions & FF_VK_EXT_RELAXED_EXTENDED_INSTR))
+        (s->extensions & FF_VK_EXT_RELAXED_EXTENDED_INSTR)) {
         GLSLC(0, #extension GL_EXT_debug_printf : require                     );
+        GLSLC(0, #define DEBUG                                                );
+    }
 
     if (stage == VK_SHADER_STAGE_TASK_BIT_EXT ||
         stage == VK_SHADER_STAGE_MESH_BIT_EXT)