diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index fbe010d04e4..c1db8f30389 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -3890,7 +3890,7 @@ ac_handle_shader_output_decl(struct ac_llvm_context *ctx,
 		}
 	}
 
-	bool is_16bit = glsl_type_is_16bit(variable->type);
+	bool is_16bit = glsl_type_is_16bit(glsl_without_array(variable->type));
 	LLVMTypeRef type = is_16bit ? ctx->f16 : ctx->f32;
 	for (unsigned i = 0; i < attrib_count; ++i) {
 		for (unsigned chan = 0; chan < 4; chan++) {
diff --git a/src/amd/vulkan/radv_nir_to_llvm.c b/src/amd/vulkan/radv_nir_to_llvm.c
index 446d43e6266..58da610166e 100644
--- a/src/amd/vulkan/radv_nir_to_llvm.c
+++ b/src/amd/vulkan/radv_nir_to_llvm.c
@@ -2169,7 +2169,7 @@ handle_fs_input_decl(struct radv_shader_context *ctx,
 
 		interp = lookup_interp_param(&ctx->abi, variable->data.interpolation, interp_type);
 	}
-	bool is_16bit = glsl_type_is_16bit(variable->type);
+	bool is_16bit = glsl_type_is_16bit(glsl_without_array(variable->type));
 	LLVMTypeRef type = is_16bit ? ctx->ac.i16 : ctx->ac.i32;
 	if (interp == NULL)
 		interp = LLVMGetUndef(type);