diff --git a/config/dedup.us.yaml b/config/dedup.us.yaml
index 7c0da0682..da38278f4 100644
--- a/config/dedup.us.yaml
+++ b/config/dedup.us.yaml
@@ -15104,3 +15104,10 @@ groups:
     func: DEFINE_func_8018A1B4
     vram: 0x8018A1B4
     binaries: [ov_SC03_014, ov_SC03_015]
+  - id: E_func_80181170
+    tier: h_exact
+    hash: 7a7ab4e9cbb49c302769de23d0ec1ff542e91943
+    source: src/shared/engine_core.h
+    func: DEFINE_func_80181170
+    vram: 0x80181170
+    binaries: [ov_SC03_014, ov_SC03_015]
diff --git a/src/ov_SC03_014/ov_SC03_014_jr_8017EB7C.c b/src/ov_SC03_014/ov_SC03_014_jr_8017EB7C.c
index 79d7a63a3..4058b4b41 100644
--- a/src/ov_SC03_014/ov_SC03_014_jr_8017EB7C.c
+++ b/src/ov_SC03_014/ov_SC03_014_jr_8017EB7C.c
@@ -4063,23 +4063,7 @@ void func_801810CC(s32 a0) {
 }
 
 
-extern void func_80146C3C(void);
-void func_80181170(int a0) {
-    int v0 = *(int *)(a0 + 0x1C);
-    register unsigned char *p __asm__("$5") = *(unsigned char **)(a0 + 0x20);
-    *(int *)(a0 + 0x1C) = v0 + 1;
-    if (v0 >= 0x1F) {
-        func_80146C3C();
-    } else {
-        unsigned short hv = *(unsigned short *)(p + 0x1A) + 0x1E0;
-        signed char bv = *(unsigned char *)(p + 0x26) - 3;
-        *(unsigned short *)(p + 0x1A) = hv;
-        *(unsigned short *)(p + 0x18) = hv;
-        *(signed char *)(p + 0x26) = bv;
-        *(signed char *)(p + 0x25) = bv;
-        *(signed char *)(p + 0x24) = bv;
-    }
-}
+DEFINE_func_80181170()  /* dedup: shared engine-core @0x80181170 (src/shared) */
 
 
 
diff --git a/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.c b/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.c
index 62a08da8a..62c4dba92 100644
--- a/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.c
+++ b/src/ov_SC03_015/ov_SC03_015_jr_8017EB7C.c
@@ -3982,23 +3982,7 @@ void func_801810CC(s32 a0) {
 }
 
 
-extern void func_80146C3C(void);
-void func_80181170(int a0) {
-    int v0 = *(int *)(a0 + 0x1C);
-    register unsigned char *p __asm__("$5") = *(unsigned char **)(a0 + 0x20);
-    *(int *)(a0 + 0x1C) = v0 + 1;
-    if (v0 >= 0x1F) {
-        func_80146C3C();
-    } else {
-        unsigned short hv = *(unsigned short *)(p + 0x1A) + 0x1E0;
-        signed char bv = *(unsigned char *)(p + 0x26) - 3;
-        *(unsigned short *)(p + 0x1A) = hv;
-        *(unsigned short *)(p + 0x18) = hv;
-        *(signed char *)(p + 0x26) = bv;
-        *(signed char *)(p + 0x25) = bv;
-        *(signed char *)(p + 0x24) = bv;
-    }
-}
+DEFINE_func_80181170()  /* dedup: shared engine-core @0x80181170 (src/shared) */