diff --git a/Makefile b/Makefile
index 78145cdf..a6b876b8 100644
--- a/Makefile
+++ b/Makefile
@@ -193,6 +193,7 @@ build/src/libultra/2C700.o: OPTFLAGS := -O1 -g0
 build/src/libultra/2D300.o: OPTFLAGS := -O1 -g0
 build/src/libultra/io/controller.o: OPTFLAGS := -O1 -g0
 build/src/libultra/libc/string.o: OPTFLAGS := -O2 -g0
+build/src/libultra/libc/ldiv.o: OPTFLAGS := -O2 -g0
 
 # cc & asm-processor
 build/src/%.o: CC := $(ASM_PROC) $(ASM_PROC_FLAGS) $(CC) -- $(AS) $(ASFLAGS) --
diff --git a/src/libultra/libc/ldiv.c b/src/libultra/libc/ldiv.c
index 899d716f..657071f6 100644
--- a/src/libultra/libc/ldiv.c
+++ b/src/libultra/libc/ldiv.c
@@ -1,7 +1,18 @@
 #include "global.h"
 #include "libc/stdlib.h"
 
-#pragma GLOBAL_ASM("asm/us/nonmatchings/libultra/libc/ldiv/lldiv.s")
+lldiv_t lldiv(long long numer, long long denom) {
+    lldiv_t val;
+
+    val.quot = numer / denom;
+    val.rem = numer - denom * val.quot;
+    if ((val.quot < 0) && (val.rem > 0)) {
+        val.quot++;
+        val.rem -= denom;
+    }
+
+    return val;
+}
 
 ldiv_t ldiv(long numer, long denom) {
     ldiv_t val;