diff --git a/src/halfutils.h b/src/halfutils.h
index 5f6e9cd..c684f72 100644
--- a/src/halfutils.h
+++ b/src/halfutils.h
@@ -67,9 +67,6 @@ HalfToFloat4(half num)
 #elif defined(FLT16_SUPPORT)
 	return (float) num;
 #else
-	/* TODO Improve performance */
-
-	/* Assumes same endianness for floats and integers */
 	union
 	{
 		float		f;
@@ -154,9 +151,6 @@ Float4ToHalfUnchecked(float num)
 #elif defined(FLT16_SUPPORT)
 	return (_Float16) num;
 #else
-	/* TODO Improve performance */
-
-	/* Assumes same endianness for floats and integers */
 	union
 	{
 		float		f;
diff --git a/src/sparsevec.c b/src/sparsevec.c
index e7b5141..23a5ea1 100644
--- a/src/sparsevec.c
+++ b/src/sparsevec.c
@@ -244,7 +244,6 @@ sparsevec_in(PG_FUNCTION_ARGS)
 			long		index;
 			float		value;
 
-			/* TODO Better error */
 			if (nnz == maxNnz)
 				ereport(ERROR,
 						(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),