diff --git a/src/compiler/glsl/ast_to_hir.cpp b/src/compiler/glsl/ast_to_hir.cpp
index 7de164cebbf..4916b1590a0 100644
--- a/src/compiler/glsl/ast_to_hir.cpp
+++ b/src/compiler/glsl/ast_to_hir.cpp
@@ -7678,16 +7678,16 @@ ast_interface_block::hir(exec_list *instructions,
                                this->block_name);
 
    enum glsl_interface_packing packing;
-   if (this->layout.flags.q.shared) {
-      packing = GLSL_INTERFACE_PACKING_SHARED;
+   if (this->layout.flags.q.std140) {
+      packing = GLSL_INTERFACE_PACKING_STD140;
    } else if (this->layout.flags.q.packed) {
       packing = GLSL_INTERFACE_PACKING_PACKED;
    } else if (this->layout.flags.q.std430) {
       packing = GLSL_INTERFACE_PACKING_STD430;
    } else {
-      /* The default layout is std140.
+      /* The default layout is shared.
        */
-      packing = GLSL_INTERFACE_PACKING_STD140;
+      packing = GLSL_INTERFACE_PACKING_SHARED;
    }
 
    ir_variable_mode var_mode;