diff --git a/v1.0/Bill_of_materials.txt b/v1.0/Bill_of_materials.txt
index 86de696..e0391ee 100644
--- a/v1.0/Bill_of_materials.txt
+++ b/v1.0/Bill_of_materials.txt
@@ -62,7 +62,7 @@ No. Component                                                  Unit  Quantity
 14. Socket for 4mm connectors, isolated, with screw nut        piece        2
 15. Silicone insulated wire 20kV, 7cm                          piece        2
 16. Heat-shrink tubing flexible 10mm                           piece        4
-17. Plastik70, anti-corona insulatoion in spray [optional]     piece        1
+17. Plastik70, anti-corona insulation in spray [optional]     piece        1
    
 CLAWS & STRAP         
 -----------------------------------------------------------------------------
@@ -111,6 +111,6 @@ No. Component                                                  Unit  Quantity
 27. Transformer ETD49/25/16 clip (yoke)                        piece        2
 28. Wire AWG34/0.16mm dia., 2630V H                            m          110
 29. Wire AWG24/0.51mm dia., 4400V HY                           mm          40
-30. Heat-shring tubing for HV end                              mm          50
+30. Heat-shrink tubing for HV end                              mm          50
 31. Silicone insulated wire 3kV, 7cm                           piece        2
 32. Paper 80gsm for core gaps                                  A4           1
\ No newline at end of file