diff --git a/tools/rockchip/boot_merger.c b/tools/rockchip/boot_merger.c
index f258f6c3c3..e8ccea3828 100644
--- a/tools/rockchip/boot_merger.c
+++ b/tools/rockchip/boot_merger.c
@@ -149,7 +149,7 @@ static inline void fixPath(char *path)
 			strcpy(path, gNewPath);
 			strcat(path, tmp);
 		}
-	} else if (gPrePath) {
+	} else if (gPrePath && strncmp(path, gPrePath, strlen(gPrePath))) {
 		strcpy(tmp, path);
 		strcpy(path, gPrePath);
 		strcat(path, tmp);
diff --git a/tools/rockchip/trust_merger.c b/tools/rockchip/trust_merger.c
index a33125e224..601d33f9d4 100644
--- a/tools/rockchip/trust_merger.c
+++ b/tools/rockchip/trust_merger.c
@@ -110,7 +110,7 @@ static inline void fixPath(char *path)
 			strcpy(path, gNewPath);
 			strcat(path, tmp);
 		}
-	} else if (gPrePath) {
+	} else if (gPrePath && strncmp(path, gPrePath, strlen(gPrePath))) {
 		strcpy(tmp, path);
 		strcpy(path, gPrePath);
 		strcat(path, tmp);