diff --git a/HACKING.md b/HACKING.md
index 721e6a437..7b791f95a 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -43,7 +43,7 @@ Assert.h
 Lining your code with assertions is great! You'll find a few macros in Assert.h
 to help you. If an assertion is cheap or in a cold codepath or you otherwise feel
 it's important that it's never skipped, use `Assert_true()`, if you want the
-asserion to be skipped on small hardware where `-DPARANOIA` is disabled, use
+assertion to be skipped on small hardware where `-DPARANOIA` is disabled, use
 `Assert_ifParanoid()`, if your assertion might be triggered by "bad nodes" in a
 realistic network and is for simulation only, use `Assert_ifTesting()` and it
 will only be included if `-DTESTING` is passed. If your assertion has