diff --git a/intern/cycles/kernel/kernel_bake.h b/intern/cycles/kernel/kernel_bake.h
index 7314af35eb9..ddf59f40753 100644
--- a/intern/cycles/kernel/kernel_bake.h
+++ b/intern/cycles/kernel/kernel_bake.h
@@ -150,7 +150,7 @@ ccl_device void compute_light_pass(KernelGlobals *kg, ShaderData *sd, PathRadian
 #if defined(__EMISSION__)
 			/* direct light */
 			if(kernel_data.integrator.use_direct_light) {
-				bool all = kernel_data.integrator.sample_all_lights_direct;
+				int all = kernel_data.integrator.sample_all_lights_direct;
 				kernel_branched_path_surface_connect_light(kg, &rng,
 					sd, &state, throughput, 1.0f, &L_sample, all);
 			}
diff --git a/intern/cycles/kernel/kernel_path.h b/intern/cycles/kernel/kernel_path.h
index 650e3b047f0..732c6e2fc21 100644
--- a/intern/cycles/kernel/kernel_path.h
+++ b/intern/cycles/kernel/kernel_path.h
@@ -141,7 +141,7 @@ ccl_device void kernel_path_indirect(KernelGlobals *kg,
 				VolumeIntegrateResult result = VOLUME_PATH_ATTENUATED;
 
 				if(volume_segment.closure_flag & SD_SCATTER) {
-					bool all = kernel_data.integrator.sample_all_lights_indirect;
+					int all = kernel_data.integrator.sample_all_lights_indirect;
 
 					/* direct light sampling */
 					kernel_branched_path_volume_connect_light(kg,
@@ -374,7 +374,7 @@ ccl_device void kernel_path_indirect(KernelGlobals *kg,
 
 #if defined(__EMISSION__) && defined(__BRANCHED_PATH__)
 		if(kernel_data.integrator.use_direct_light) {
-			bool all = kernel_data.integrator.sample_all_lights_indirect;
+			int all = kernel_data.integrator.sample_all_lights_indirect;
 			kernel_branched_path_surface_connect_light(kg,
 			                                           rng,
 			                                           &sd,
@@ -705,7 +705,7 @@ ccl_device_inline float4 kernel_path_integrate(KernelGlobals *kg,
 				VolumeIntegrateResult result = VOLUME_PATH_ATTENUATED;
 
 				if(volume_segment.closure_flag & SD_SCATTER) {
-					bool all = false;
+					int all = false;
 
 					/* direct light sampling */
 					kernel_branched_path_volume_connect_light(kg, rng, &volume_sd,
diff --git a/intern/cycles/kernel/kernel_path_branched.h b/intern/cycles/kernel/kernel_path_branched.h
index 7c685e3b191..13ae4cf669b 100644
--- a/intern/cycles/kernel/kernel_path_branched.h
+++ b/intern/cycles/kernel/kernel_path_branched.h
@@ -194,7 +194,7 @@ ccl_device void kernel_branched_path_subsurface_scatter(KernelGlobals *kg,
 #ifdef __EMISSION__
 				/* direct light */
 				if(kernel_data.integrator.use_direct_light) {
-					bool all = kernel_data.integrator.sample_all_lights_direct;
+					int all = kernel_data.integrator.sample_all_lights_direct;
 					kernel_branched_path_surface_connect_light(
 					        kg,
 					        rng,
@@ -297,7 +297,7 @@ ccl_device float4 kernel_branched_path_integrate(KernelGlobals *kg, RNG *rng, in
 			if(volume_segment.closure_flag & SD_SCATTER) {
 				volume_segment.sampling_method = volume_stack_sampling_method(kg, state.volume_stack);
 
-				bool all = kernel_data.integrator.sample_all_lights_direct;
+				int all = kernel_data.integrator.sample_all_lights_direct;
 
 				kernel_branched_path_volume_connect_light(kg, rng, &volume_sd,
 					throughput, &state, &L, all, &volume_ray, &volume_segment);
@@ -517,7 +517,7 @@ ccl_device float4 kernel_branched_path_integrate(KernelGlobals *kg, RNG *rng, in
 #ifdef __EMISSION__
 			/* direct light */
 			if(kernel_data.integrator.use_direct_light) {
-				bool all = kernel_data.integrator.sample_all_lights_direct;
+				int all = kernel_data.integrator.sample_all_lights_direct;
 				kernel_branched_path_surface_connect_light(kg, rng,
 					&sd, &hit_state, throughput, 1.0f, &L, all);
 			}
diff --git a/intern/cycles/kernel/kernel_path_surface.h b/intern/cycles/kernel/kernel_path_surface.h
index 101e559e0d5..f2204a524fd 100644
--- a/intern/cycles/kernel/kernel_path_surface.h
+++ b/intern/cycles/kernel/kernel_path_surface.h
@@ -20,7 +20,7 @@ CCL_NAMESPACE_BEGIN
 
 /* branched path tracing: connect path directly to position on one or more lights and add it to L */
 ccl_device_noinline void kernel_branched_path_surface_connect_light(KernelGlobals *kg, RNG *rng,
-	ShaderData *sd, PathState *state, float3 throughput, float num_samples_adjust, PathRadiance *L, bool sample_all_lights)
+	ShaderData *sd, PathState *state, float3 throughput, float num_samples_adjust, PathRadiance *L, int sample_all_lights)
 {
 #ifdef __EMISSION__
 	/* sample illumination from lights to find path contribution */