diff --git a/src/news_func.h b/src/news_func.h
index 40391fdba0..64edf636ba 100644
--- a/src/news_func.h
+++ b/src/news_func.h
@@ -16,7 +16,7 @@ void InitNewsItemStructs();
 extern NewsItem _statusbar_news_item;
 extern bool _news_ticker_sound;
 
-extern NewsTypeData _news_type_data[NT_END];
+extern NewsTypeData _news_type_data[];
 
 /**
  * Delete a news item type about a vehicle
diff --git a/src/news_gui.cpp b/src/news_gui.cpp
index 32d03f56b8..c35c23fde6 100644
--- a/src/news_gui.cpp
+++ b/src/news_gui.cpp
@@ -104,7 +104,7 @@ struct NewsSubtypeData {
 /**
  * Data common to all news items of a given subtype (actual data)
  */
-static const struct NewsSubtypeData _news_subtype_data[NS_END] = {
+static const NewsSubtypeData _news_subtype_data[] = {
 	/* type,               display_mode, flags,                  callback */
 	{ NT_ARRIVAL_COMPANY,  NM_THIN,     NF_VIEWPORT|NF_VEHICLE, NULL                    }, ///< NS_ARRIVAL_COMPANY
 	{ NT_ARRIVAL_OTHER,    NM_THIN,     NF_VIEWPORT|NF_VEHICLE, NULL                    }, ///< NS_ARRIVAL_OTHER
@@ -127,10 +127,12 @@ static const struct NewsSubtypeData _news_subtype_data[NS_END] = {
 	{ NT_GENERAL,          NM_NORMAL,   NF_TILE,                NULL                    }, ///< NS_GENERAL
 };
 
+assert_compile(lengthof(_news_subtype_data) == NS_END);
+
 /**
  * Per-NewsType data
  */
-NewsTypeData _news_type_data[NT_END] = {
+NewsTypeData _news_type_data[] = {
 	/* name,              age, sound,           display */
 	{ "arrival_player",    60, SND_1D_APPLAUSE, ND_FULL },  ///< NT_ARRIVAL_COMPANY
 	{ "arrival_other",     60, SND_1D_APPLAUSE, ND_FULL },  ///< NT_ARRIVAL_OTHER
@@ -149,6 +151,8 @@ NewsTypeData _news_type_data[NT_END] = {
 	{ "general",           60, SND_BEGIN,       ND_FULL },  ///< NT_GENERAL
 };
 
+assert_compile(lengthof(_news_type_data) == NT_END);
+
 struct NewsWindow : Window {
 	uint16 chat_height;
 	NewsItem *ni;
diff --git a/src/news_type.h b/src/news_type.h
index 60c3b58f3e..3697a66e9b 100644
--- a/src/news_type.h
+++ b/src/news_type.h
@@ -95,9 +95,9 @@ enum NewsDisplay {
  */
 struct NewsTypeData {
 	const char * const name; ///< Name
-	const byte age;         ///< Maximum age of news items (in days)
-	const SoundFx sound;    ///< Sound
-	NewsDisplay display;    ///< Display mode (off, summary, full)
+	const byte age;          ///< Maximum age of news items (in days)
+	const SoundFx sound;     ///< Sound
+	NewsDisplay display;     ///< Display mode (off, summary, full)
 };
 
 struct NewsItem {