diff --git a/Storage/Disk/Parsers/CPM.hpp b/Storage/Disk/Parsers/CPM.hpp
index 78f62d5b5..a51c8b5cc 100644
--- a/Storage/Disk/Parsers/CPM.hpp
+++ b/Storage/Disk/Parsers/CPM.hpp
@@ -22,9 +22,9 @@ namespace CPM {
 
 struct ParameterBlock {
 	int sectors_per_track;
+	int tracks;
 	int block_size;
 	int first_sector;
-	int logic_extents_per_physical;
 	uint16_t catalogue_allocation_bitmap;
 	int reserved_tracks;
 };