diff --git a/Makefile b/Makefile
index 848744478..cc91bc264 100644
--- a/Makefile
+++ b/Makefile
@@ -564,7 +564,7 @@ else ifeq ($(COMPRESS),rnc1)
 include rnc1rules.mk
 else ifeq ($(COMPRESS),rnc2)
 include rnc2rules.mk
-else
+else ifeq ($(COMPRESS),yay0)
 include yay0rules.mk
 endif
 
diff --git a/src/game/memory.c b/src/game/memory.c
index 779ec879d..783154c00 100644
--- a/src/game/memory.c
+++ b/src/game/memory.c
@@ -352,7 +352,7 @@ void *load_segment_decompress(s32 segment, u8 *srcStart, u8 *srcEnd) {
             Propack_UnpackM1(compressed, dest);
 #elif RNC2
             Propack_UnpackM2(compressed, dest);
-#else
+#elif YAY0
             slidstart(compressed, dest);
 #endif
             set_segment_base_addr(segment, dest);
@@ -385,7 +385,7 @@ void *load_segment_decompress_heap(u32 segment, u8 *srcStart, u8 *srcEnd) {
         Propack_UnpackM1(compressed, gDecompressionHeap);
 #elif RNC2
         Propack_UnpackM2(compressed, gDecompressionHeap);
-#else
+#elif YAY0
         slidstart(compressed, gDecompressionHeap);
 #endif
         set_segment_base_addr(segment, gDecompressionHeap);