diff --git a/src/shared/efi-api.c b/src/shared/efi-api.c
index b2c6af8754d..b9faae025b2 100644
--- a/src/shared/efi-api.c
+++ b/src/shared/efi-api.c
@@ -546,11 +546,3 @@ bool efi_has_tpm2(void) {
 }
 
 #endif
-
-char *efi_tilt_backslashes(char *s) {
-        for (char *p = s; *p; p++)
-                if (*p == '\\')
-                        *p = '/';
-
-        return s;
-}
diff --git a/src/shared/efi-api.h b/src/shared/efi-api.h
index 5acc9e83ce9..c36524f4042 100644
--- a/src/shared/efi-api.h
+++ b/src/shared/efi-api.h
@@ -3,6 +3,7 @@
 
 #include "efivars-fundamental.h"
 #include "efivars.h"
+#include "string-util.h"
 
 /* Various calls for interfacing with EFI variables from the official UEFI specs. */
 
@@ -65,4 +66,6 @@ static inline bool efi_has_tpm2(void) {
 
 #endif
 
-char *efi_tilt_backslashes(char *s);
+static inline char *efi_tilt_backslashes(char *s) {
+        return string_replace_char(s, '\\', '/');
+}