diff --git a/Makefile b/Makefile
index 62797c5..55d3d6f 100644
--- a/Makefile
+++ b/Makefile
@@ -127,7 +127,7 @@ CFLAGS		+= -DGZIP_COMPRESSION
 endif
 
 ifeq ($(USE_HEATSHRINK),"yes")
-CFLAGS		+= -DEFS_HEATSHRINK
+CFLAGS		+= -DESPFS_HEATSHRINK
 endif
 
 vpath %.c $(SRC_DIR)
diff --git a/espfs/espfs.h b/espfs/espfs.h
index 4d7e1ff..a147fac 100644
--- a/espfs/espfs.h
+++ b/espfs/espfs.h
@@ -1,8 +1,9 @@
 #ifndef ESPFS_H
 #define ESPFS_H
 
-//Define this if you want to be able to use Heatshrink-compressed espfs images.
-#define ESPFS_HEATSHRINK
+// This define is done in Makefile. If you do not use default Makefile, uncomment
+// to be able to use Heatshrink-compressed espfs images.
+//#define ESPFS_HEATSHRINK
 
 typedef enum {
 	ESPFS_INIT_RESULT_OK,