diff --git a/config/dedup.us.yaml b/config/dedup.us.yaml
index a80bc6c7a..59c4a9f21 100644
--- a/config/dedup.us.yaml
+++ b/config/dedup.us.yaml
@@ -14789,3 +14789,10 @@ groups:
     func: DEFINE_func_80181648
     vram: 0x80181648
     binaries: [ov_SC04_018, ov_SC04_019]
+  - id: E_func_801803BC
+    tier: h_exact
+    hash: b5a1123a68cdd6ffb4b1d1c334577cc3d3e498bc
+    source: src/shared/engine_core.h
+    func: DEFINE_func_801803BC
+    vram: 0x801803BC
+    binaries: [ov_SC04_018, ov_SC04_019]
diff --git a/src/ov_SC04_018/ov_SC04_018_jr_8017AE2C.c b/src/ov_SC04_018/ov_SC04_018_jr_8017AE2C.c
index 0c62e200f..cb09d5ac4 100644
--- a/src/ov_SC04_018/ov_SC04_018_jr_8017AE2C.c
+++ b/src/ov_SC04_018/ov_SC04_018_jr_8017AE2C.c
@@ -5400,24 +5400,7 @@ void func_8018034C(void *arg0) {
 
 #include "common.h"
 
-extern void func_8012E88C(s32);
-extern void func_8012A828(s32 *a0, s32 a1);
-extern void func_80184C90(s32);
-extern void func_80184ED4(s32, s32, s32, s32);
-extern void func_80185FB8(s32, s32, s32);
-
-extern s32 D_801B9DF8;
-extern short D_801B65C8;
-
-void func_801803BC(void *arg0) {
-    s32 s0 = (s32)arg0;
-    *(short *)((char *)s0 + 0x2) = 3;
-    func_8012E88C(s0);
-    func_8012A828((s32 *)s0, (s32)&(*(short *)&D_801B9DF8));
-    func_80184C90(s0);
-    func_80184ED4(s0, (s32)&D_801B65C8, 0, 0x40);
-    func_80185FB8(s0, 0xC, 0x1);
-}
+DEFINE_func_801803BC()  /* dedup: shared engine-core @0x801803BC (src/shared) */
 
 
 DEFINE_func_8018042C()  /* dedup: shared engine-core @0x8018042C (src/shared) */
diff --git a/src/ov_SC04_019/ov_SC04_019_jr_8017AE2C.c b/src/ov_SC04_019/ov_SC04_019_jr_8017AE2C.c
index fc6f3215d..bdedc5f73 100644
--- a/src/ov_SC04_019/ov_SC04_019_jr_8017AE2C.c
+++ b/src/ov_SC04_019/ov_SC04_019_jr_8017AE2C.c
@@ -5378,7 +5378,7 @@ void func_8018034C(void *arg0) {
 }
 
 
-INCLUDE_ASM("asm/ov_SC04_019/nonmatchings/ov_SC04_019_jr_8017AE2C", func_801803BC);
+DEFINE_func_801803BC()  /* dedup: shared engine-core @0x801803BC (src/shared) */
 
 DEFINE_func_8018042C()  /* dedup: shared engine-core @0x8018042C (src/shared) */
 
diff --git a/src/shared/engine_core.h b/src/shared/engine_core.h
index 49b0afb85..b3706c3cd 100644
--- a/src/shared/engine_core.h
+++ b/src/shared/engine_core.h
@@ -60960,6 +60960,24 @@
         func_80181998(); \
     }
 
+#define DEFINE_func_801803BC() \
+    extern void func_8012E88C(s32); \
+    extern void func_8012A828(s32 *a0, s32 a1); \
+    extern void func_80184C90(s32); \
+    extern void func_80184ED4(s32, s32, s32, s32); \
+    extern void func_80185FB8(s32, s32, s32); \
+    extern s32 D_801B9DF8; \
+    extern short D_801B65C8; \
+    void func_801803BC(void *arg0) { \
+        s32 s0 = (s32)arg0; \
+        *(short *)((char *)s0 + 0x2) = 3; \
+        func_8012E88C(s0); \
+        func_8012A828((s32 *)s0, (s32)&(*(short *)&D_801B9DF8)); \
+        func_80184C90(s0); \
+        func_80184ED4(s0, (s32)&D_801B65C8, 0, 0x40); \
+        func_80185FB8(s0, 0xC, 0x1); \
+    }
+
 #endif
 
 #define DEFINE_func_80128EA8() \
@@ -151325,4 +151343,22 @@
         func_80181998(); \
     }
 
+#define DEFINE_func_801803BC() \
+    extern void func_8012E88C(s32); \
+    extern void func_8012A828(s32 *a0, s32 a1); \
+    extern void func_80184C90(s32); \
+    extern void func_80184ED4(s32, s32, s32, s32); \
+    extern void func_80185FB8(s32, s32, s32); \
+    extern s32 D_801B9DF8; \
+    extern short D_801B65C8; \
+    void func_801803BC(void *arg0) { \
+        s32 s0 = (s32)arg0; \
+        *(short *)((char *)s0 + 0x2) = 3; \
+        func_8012E88C(s0); \
+        func_8012A828((s32 *)s0, (s32)&(*(short *)&D_801B9DF8)); \
+        func_80184C90(s0); \
+        func_80184ED4(s0, (s32)&D_801B65C8, 0, 0x40); \
+        func_80185FB8(s0, 0xC, 0x1); \
+    }
+
 #endif