diff --git a/README.md b/README.md
index d8dfd7c2bc..083880b4e2 100644
--- a/README.md
+++ b/README.md
@@ -115,8 +115,8 @@ If such situation bothers you add this to your `config.h`:
 
     #define PREVENT_STUCK_MODIFIERS
 
-Warning: This option uses up 2 bytes of memory per key. For example on
-Planck it uses 2\*4\*12=96 bytes.
+Warning: This option uses up 1 byte of memory per key. For example on
+Planck it uses 4\*12=96 bytes.
 
 ### Remember: These are just aliases