diff --git a/src/board/system76/common/scratch.c b/src/board/system76/common/scratch.c
index 208b792..dfb3c1e 100644
--- a/src/board/system76/common/scratch.c
+++ b/src/board/system76/common/scratch.c
@@ -7,32 +7,13 @@
 #include <board/smfi.h>
 #include <common/macro.h>
 #include <ec/pwm.h>
+#include <ec/scratch.h>
 
 // Include scratch ROM
 uint8_t __code __at(SCRATCH_OFFSET) scratch_rom[] = {
     #include <scratch.h>
 };
 
-#if __EC__ == it5570e
-    // SCAR0 is stored in processor cache, not in xram
-    volatile uint8_t __xdata __at(0x1040) SCAR0L;
-    volatile uint8_t __xdata __at(0x1041) SCAR0M;
-    volatile uint8_t __xdata __at(0x1042) SCAR0H;
-    #define SCARL SCAR0L
-    #define SCARM SCAR0M
-    #define SCARH SCAR0H
-#elif __EC__ == it8587e
-    // SCAR1 is in xram at 0x800-0xC00
-    volatile uint8_t __xdata __at(0x1043) SCAR1L;
-    volatile uint8_t __xdata __at(0x1044) SCAR1M;
-    volatile uint8_t __xdata __at(0x1045) SCAR1H;
-    #define SCARL SCAR1L
-    #define SCARM SCAR1M
-    #define SCARH SCAR1H
-#else
-    #error "scratch.c unknown EC"
-#endif
-
 // Enter or exit scratch ROM
 void scratch_trampoline(void) {
     // Set fans to 100%
diff --git a/src/ec/it5570e/include/ec/scratch.h b/src/ec/it5570e/include/ec/scratch.h
new file mode 100644
index 0000000..752dfc5
--- /dev/null
+++ b/src/ec/it5570e/include/ec/scratch.h
@@ -0,0 +1,14 @@
+#ifndef _EC_SCRATCH_H
+#define _EC_SCRATCH_H
+
+#include <stdint.h>
+
+// SCAR0 is stored in processor cache, not in xram
+volatile uint8_t __xdata __at(0x1040) SCAR0L;
+volatile uint8_t __xdata __at(0x1041) SCAR0M;
+volatile uint8_t __xdata __at(0x1042) SCAR0H;
+#define SCARL SCAR0L
+#define SCARM SCAR0M
+#define SCARH SCAR0H
+
+#endif // _EC_SCRATCH_H
diff --git a/src/ec/it8587e/include/ec/scratch.h b/src/ec/it8587e/include/ec/scratch.h
new file mode 100644
index 0000000..1688d76
--- /dev/null
+++ b/src/ec/it8587e/include/ec/scratch.h
@@ -0,0 +1,14 @@
+#ifndef _EC_SCRATCH_H
+#define _EC_SCRATCH_H
+
+#include <stdint.h>
+
+// SCAR1 is in xram at 0x800-0xC00
+volatile uint8_t __xdata __at(0x1043) SCAR1L;
+volatile uint8_t __xdata __at(0x1044) SCAR1M;
+volatile uint8_t __xdata __at(0x1045) SCAR1H;
+#define SCARL SCAR1L
+#define SCARM SCAR1M
+#define SCARH SCAR1H
+
+#endif // _EC_SCRATCH_H