diff --git a/engines/icb/breath.cpp b/engines/icb/breath.cpp
index 6be9b57eac1..a1310584383 100644
--- a/engines/icb/breath.cpp
+++ b/engines/icb/breath.cpp
@@ -74,7 +74,7 @@ Breath::Breath() {
 #define SMOKE_IC (32)
 #define SMOKE_IS (4)
 
-#define BREATH_DY (-(g_icb->getRandomSource()->getRandomNumber(2 - 1)))
+#define BREATH_DY (-static_cast<int>(g_icb->getRandomSource()->getRandomNumber(2 - 1)))
 #define BREATH_DZ (g_icb->getRandomSource()->getRandomNumber(4 - 1))
 #define BREATH_DC (-4)
 #define BREATH_DS (2)