diff --git a/src/glsl/link_uniform_blocks.cpp b/src/glsl/link_uniform_blocks.cpp
index c72d1d8f1de..e475147e51e 100644
--- a/src/glsl/link_uniform_blocks.cpp
+++ b/src/glsl/link_uniform_blocks.cpp
@@ -58,6 +58,15 @@ public:
 private:
    virtual void visit_field(const glsl_type *type, const char *name,
                             bool row_major)
+   {
+      (void) type;
+      (void) name;
+      (void) row_major;
+      assert(!"Should not get here.");
+   }
+
+   virtual void visit_field(const glsl_type *type, const char *name,
+                            bool row_major, const glsl_type *record_type)
    {
       assert(this->index < this->num_variables);
 
@@ -85,7 +94,9 @@ private:
          v->IndexName = v->Name;
       }
 
-      unsigned alignment = type->std140_base_alignment(v->RowMajor);
+      const unsigned alignment = record_type
+	 ? record_type->std140_base_alignment(v->RowMajor)
+	 : type->std140_base_alignment(v->RowMajor);
       unsigned size = type->std140_size(v->RowMajor);
 
       this->offset = glsl_align(this->offset, alignment);
@@ -107,6 +118,10 @@ private:
 
    virtual void visit_field(const glsl_struct_field *field)
    {
+      /* FINISHME: When support for doubles (dvec4, etc.) is added to the
+       * FINISHME: compiler, this may be incorrect for a structure in a UBO
+       * FINISHME: like struct s { struct { float f } s1; dvec4 v; };.
+       */
       this->offset = glsl_align(this->offset,
                                 field->type->std140_base_alignment(false));
    }
diff --git a/src/glsl/link_uniforms.cpp b/src/glsl/link_uniforms.cpp
index 095895bf27e..fa77157f78d 100644
--- a/src/glsl/link_uniforms.cpp
+++ b/src/glsl/link_uniforms.cpp
@@ -401,6 +401,15 @@ private:
 
    virtual void visit_field(const glsl_type *type, const char *name,
                             bool row_major)
+   {
+      (void) type;
+      (void) name;
+      (void) row_major;
+      assert(!"Should not get here.");
+   }
+
+   virtual void visit_field(const glsl_type *type, const char *name,
+                            bool row_major, const glsl_type *record_type)
    {
       assert(!type->is_record());
       assert(!(type->is_array() && type->fields.array->is_record()));
@@ -446,7 +455,9 @@ private:
       if (this->ubo_block_index != -1) {
 	 this->uniforms[id].block_index = this->ubo_block_index;
 
-	 unsigned alignment = type->std140_base_alignment(ubo_row_major);
+	 const unsigned alignment = record_type
+	    ? record_type->std140_base_alignment(ubo_row_major)
+	    : type->std140_base_alignment(ubo_row_major);
 	 this->ubo_byte_offset = glsl_align(this->ubo_byte_offset, alignment);
 	 this->uniforms[id].offset = this->ubo_byte_offset;
 	 this->ubo_byte_offset += type->std140_size(ubo_row_major);