diff --git a/src/obidmscolumn.c b/src/obidmscolumn.c
index c87d8e9..153532e 100644
--- a/src/obidmscolumn.c
+++ b/src/obidmscolumn.c
@@ -485,7 +485,17 @@ obiversion_t obi_column_get_latest_version_from_name(OBIDMS_p dms, const char* c
 
 size_t obi_get_platform_header_size()
 {
-	return getpagesize() * 2;
+	size_t header_size;
+	size_t rounded_header_size;
+	double multiple;
+
+	header_size = sizeof(OBIDMS_column_header_t);
+
+	multiple = 	ceil((double) header_size / (double) getpagesize());
+
+	rounded_header_size = multiple * getpagesize();
+
+	return rounded_header_size;
 }