diff --git a/common/main/powerup.h b/common/main/powerup.h
index 438ce8ca1..027cebd48 100644
--- a/common/main/powerup.h
+++ b/common/main/powerup.h
@@ -162,6 +162,5 @@ extern void do_megawow_powerup(int quantity);
 void powerup_basic_str(int redadd, int greenadd, int blueadd, int score, const char *str) __attribute_nonnull();
 }
 #endif
-#define powerup_basic(A1,A2,A3,A4,F,...)	dxx_call_printf_checked(powerup_basic,powerup_basic_str,(A1,A2,A3,A4),(F),##__VA_ARGS__)
 
 #endif
diff --git a/similar/main/powerup.cpp b/similar/main/powerup.cpp
index 00fc3afe2..8bd9143bd 100644
--- a/similar/main/powerup.cpp
+++ b/similar/main/powerup.cpp
@@ -140,6 +140,8 @@ static void _powerup_basic_nonhud(int redadd, int greenadd, int blueadd, int sco
 	add_points_to_score(ConsoleObject->ctype.player_info, score);
 }
 
+#define powerup_basic(A1,A2,A3,A4,F,...)	dxx_call_printf_checked(powerup_basic,powerup_basic_str,(A1,A2,A3,A4),(F),##__VA_ARGS__)
+__attribute_format_printf(5, 6)
 void (powerup_basic)(int redadd, int greenadd, int blueadd, int score, const char *format, ...)
 {
 	va_list	args;