diff --git a/c/cert/src/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql b/c/cert/src/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql
index 4cc0f9e32..e5dc33f81 100644
--- a/c/cert/src/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql
+++ b/c/cert/src/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql
@@ -37,7 +37,7 @@ class AsyncSafeVariableAccess extends VariableAccess {
 abstract class AsyncSafeFunction extends Function { }
 
 /**
- * C standard library ayncronous-safe functions
+ * C standard library asynchronous-safe functions
  */
 class CAsyncSafeFunction extends AsyncSafeFunction {
   //tion, or the signal function with the first argument equal to the signal number corresponding to the signal that caused the invocation of the handler
@@ -45,7 +45,7 @@ class CAsyncSafeFunction extends AsyncSafeFunction {
 }
 
 /**
- * POSIX defined ayncronous-safe functions
+ * POSIX defined asynchronous-safe functions
  */
 class PosixAsyncSafeFunction extends AsyncSafeFunction {
   PosixAsyncSafeFunction() {
@@ -73,7 +73,7 @@ class PosixAsyncSafeFunction extends AsyncSafeFunction {
 }
 
 /**
- * Application defined ayncronous-safe functions
+ * Application defined asynchronous-safe functions
  */
 class ApplicationAsyncSafeFunction extends AsyncSafeFunction {
   pragma[nomagic]
@@ -122,5 +122,5 @@ where
     or
     fc instanceof AsyncUnsafeRaiseCall
   )
-select fc, "Asyncronous-unsafe function calls within a $@ can lead to undefined behavior.",
+select fc, "Asynchronous-unsafe function calls within a $@ can lead to undefined behavior.",
   handler.getRegistration(), "signal handler"
diff --git a/c/cert/test/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.expected b/c/cert/test/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.expected
index 489844881..ce13ee69a 100644
--- a/c/cert/test/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.expected
+++ b/c/cert/test/rules/SIG30-C/CallOnlyAsyncSafeFunctionsWithinSignalHandlers.expected
@@ -1,7 +1,7 @@
 WARNING: module 'DataFlow' has been deprecated and may be removed in future (CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql:110,11-19)
 WARNING: module 'DataFlow' has been deprecated and may be removed in future (CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql:110,31-39)
 WARNING: module 'DataFlow' has been deprecated and may be removed in future (CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql:111,9-17)
-| test.c:10:3:10:18 | call to log_local_unsafe | Asyncronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:16:7:16:12 | call to signal | signal handler |
-| test.c:11:3:11:6 | call to free | Asyncronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:16:7:16:12 | call to signal | signal handler |
-| test.c:46:3:46:9 | call to longjmp | Asyncronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:50:7:50:12 | call to signal | signal handler |
-| test.c:76:7:76:11 | call to raise | Asyncronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:91:7:91:12 | call to signal | signal handler |
+| test.c:10:3:10:18 | call to log_local_unsafe | Asynchronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:16:7:16:12 | call to signal | signal handler |
+| test.c:11:3:11:6 | call to free | Asynchronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:16:7:16:12 | call to signal | signal handler |
+| test.c:46:3:46:9 | call to longjmp | Asynchronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:50:7:50:12 | call to signal | signal handler |
+| test.c:76:7:76:11 | call to raise | Asynchronous-unsafe function calls within a $@ can lead to undefined behavior. | test.c:91:7:91:12 | call to signal | signal handler |
diff --git a/change_notes/2025-07-11-typo-in-alert-message..md b/change_notes/2025-07-11-typo-in-alert-message..md
new file mode 100644
index 000000000..077f2efb6
--- /dev/null
+++ b/change_notes/2025-07-11-typo-in-alert-message..md
@@ -0,0 +1,2 @@
+- `SIG30-C`: `CallOnlyAsyncSafeFunctionsWithinSignalHandlers.ql`
+ - Fixed a misspelling of "asynchronous" in the alert message.