diff --git a/include/core.h b/include/core.h
index b958cb9..aa6fabf 100644
--- a/include/core.h
+++ b/include/core.h
@@ -76,14 +76,14 @@ typedef struct shoppyou {
 // ID of hole - an invalid record
 #define HOLE_ID (-1)
 
-// Hole sasa constant
-static const Sasa HOLE_SASA = {HOLE_ID};
+// Hole sasa constant with hole ID
+extern const Sasa HOLE_SASA;
 
-// Hole tanzaku constant
-static const Tanzaku HOLE_TANZAKU = {HOLE_ID};
+// Hole tanzaku constant with hole ID
+extern const Tanzaku HOLE_TANZAKU;
 
-// Hole kazari constant
-static const Kazari HOLE_KAZARI = {HOLE_ID};
+// Hole kazari constant with hole ID
+extern const Kazari HOLE_KAZARI;
 
 // ==================== SASAHYOU SECTION ==================== //
 
diff --git a/src/core/sappyou.c b/src/core/sappyou.c
index 4c381b5..0bd84b0 100644
--- a/src/core/sappyou.c
+++ b/src/core/sappyou.c
@@ -4,6 +4,8 @@
 
 #include "../../include/core.h"
 
+const Tanzaku HOLE_TANZAKU = {HOLE_ID};
+
 // Sappyou file signature: 七夕冊表
 const uint16_t SAPPYOU_SIG[4] = {L'七', L'夕', L'冊', L'表'};
 
diff --git a/src/core/sasahyou.c b/src/core/sasahyou.c
index 1b0960d..f6c4f35 100644
--- a/src/core/sasahyou.c
+++ b/src/core/sasahyou.c
@@ -5,6 +5,8 @@
 
 #include "../../include/core.h"
 
+const Sasa HOLE_SASA = {HOLE_ID};
+
 // Sasahyou file signature: 七夕笹表
 const uint16_t SASAHYOU_SIG[4] = {L'七', L'夕', L'笹', L'表'};
 
diff --git a/src/core/shoppyou.c b/src/core/shoppyou.c
index a2d9c84..9087832 100644
--- a/src/core/shoppyou.c
+++ b/src/core/shoppyou.c
@@ -4,6 +4,8 @@
 
 #include "../../include/core.h"
 
+const Kazari HOLE_KAZARI = {HOLE_ID};
+
 // Shoppyou file signature: 七夕飾表
 static const uint16_t SHOPPYOU_SIG[4] = {L'七', L'夕', L'飾', L'表'};