diff --git a/spirv_cross_c.cpp b/spirv_cross_c.cpp
index 20109888..7212dde1 100644
--- a/spirv_cross_c.cpp
+++ b/spirv_cross_c.cpp
@@ -1017,12 +1017,8 @@ spvc_result spvc_compiler_msl_add_vertex_attribute(spvc_compiler compiler, const
 	auto &msl = *static_cast<CompilerMSL *>(compiler->compiler.get());
 	MSLVertexAttr attr;
 	attr.location = va->location;
-	attr.msl_buffer = va->msl_buffer;
-	attr.msl_offset = va->msl_offset;
-	attr.msl_stride = va->msl_stride;
 	attr.format = static_cast<MSLVertexFormat>(va->format);
 	attr.builtin = static_cast<spv::BuiltIn>(va->builtin);
-	attr.per_instance = va->per_instance != 0;
 	msl.add_msl_vertex_attribute(attr);
 	return SPVC_SUCCESS;
 #else
@@ -2260,12 +2256,8 @@ void spvc_msl_vertex_attribute_init(spvc_msl_vertex_attribute *attr)
 	// Crude, but works.
 	MSLVertexAttr attr_default;
 	attr->location = attr_default.location;
-	attr->per_instance = attr_default.per_instance ? SPVC_TRUE : SPVC_FALSE;
 	attr->format = static_cast<spvc_msl_vertex_format>(attr_default.format);
 	attr->builtin = static_cast<SpvBuiltIn>(attr_default.builtin);
-	attr->msl_buffer = attr_default.msl_buffer;
-	attr->msl_offset = attr_default.msl_offset;
-	attr->msl_stride = attr_default.msl_stride;
 #else
 	memset(attr, 0, sizeof(*attr));
 #endif
diff --git a/spirv_cross_c.h b/spirv_cross_c.h
index 0c218396..ddc58f0b 100644
--- a/spirv_cross_c.h
+++ b/spirv_cross_c.h
@@ -270,10 +270,16 @@ typedef enum spvc_msl_vertex_format
 typedef struct spvc_msl_vertex_attribute
 {
 	unsigned location;
+
+	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
 	unsigned msl_buffer;
+	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
 	unsigned msl_offset;
+	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
 	unsigned msl_stride;
+	/* Obsolete, do not use. Only lingers on for ABI compatibility. */
 	spvc_bool per_instance;
+
 	spvc_msl_vertex_format format;
 	SpvBuiltIn builtin;
 } spvc_msl_vertex_attribute;
diff --git a/spirv_msl.hpp b/spirv_msl.hpp
index e56d27b9..b786a143 100644
--- a/spirv_msl.hpp
+++ b/spirv_msl.hpp
@@ -43,10 +43,6 @@ enum MSLVertexFormat
 struct MSLVertexAttr
 {
 	uint32_t location = 0;
-	uint32_t msl_buffer = 0;
-	uint32_t msl_offset = 0;
-	uint32_t msl_stride = 0;
-	bool per_instance = false;
 	MSLVertexFormat format = MSL_VERTEX_FORMAT_OTHER;
 	spv::BuiltIn builtin = spv::BuiltInMax;
 };