diff --git a/changelog b/changelog
index e5fd2940a28..a9fe906b116 100644
--- a/changelog
+++ b/changelog
@@ -8,6 +8,7 @@ Version 1.13.3+dev:
  * Miscellaneous and bug fixes:
    * Fix non-deterministic crashes in the Attack Unit dialog resulting from
      invalid memory references (regression introduced in 1.13.3).
+   * Fix uninitialized variable in event handling code (bug #24498).
 
 Version 1.13.3:
  * Greatly improved SDL 2 support. SDL 2 is now used by default build when
diff --git a/src/events.cpp b/src/events.cpp
index a722cc1dec4..01cb4bf017b 100644
--- a/src/events.cpp
+++ b/src/events.cpp
@@ -171,11 +171,12 @@ event_context::~event_context()
 	event_contexts.pop_back();
 }
 
-	sdl_handler::sdl_handler(const bool auto_join) :
+sdl_handler::sdl_handler(const bool auto_join) :
 #if !SDL_VERSION_ATLEAST(2, 0, 0)
 	unicode_(SDL_EnableUNICODE(1)),
 #endif
-	has_joined_(false)
+	has_joined_(false),
+	has_joined_global_(false)
 {
 
 #if !SDL_VERSION_ATLEAST(2, 0, 0)