diff --git a/app/src/main/java/ca/pkay/rcloneexplorer/Rclone.java b/app/src/main/java/ca/pkay/rcloneexplorer/Rclone.java
index b21b771b5..976e44194 100644
--- a/app/src/main/java/ca/pkay/rcloneexplorer/Rclone.java
+++ b/app/src/main/java/ca/pkay/rcloneexplorer/Rclone.java
@@ -181,9 +181,17 @@ public String[] getRcloneEnv(String... overwriteOptions) {
         String tmpDir = context.getCacheDir().getAbsolutePath();
         environmentValues.add("TMPDIR=" + tmpDir);
 
-        // ignore chtimes errors
-        // ref: https://github.com/rclone/rclone/issues/2446
-        environmentValues.add("RCLONE_LOCAL_NO_SET_MODTIME=true");
+        // RCLONE_LOCAL_NO_SET_MODTIME used to be set here to work around chtimes
+        // crashes on old Android storage stacks (ref: rclone#2446). It makes the
+        // local backend's Precision() report ModTimeNotSupported unconditionally
+        // (backend/local/local.go), which makes rclone's default file comparison
+        // fall back to a silent size-only check for every sync, ignoring
+        // modification time entirely -- changed files of the same size never get
+        // re-synced. A failing chtimes() is not fatal in current rclone: a failed
+        // SetModTime is just logged and counted as an error, the transfer itself
+        // still succeeds (fs/operations/operations.go). So leave modtime-setting
+        // enabled and let rclone's own runtime precision probe (readPrecision())
+        // degrade gracefully per-remote if chtimes truly isn't supported there.
 
         // Allow the caller to overwrite any option for special cases
         Iterator<String> envVarIter = environmentValues.iterator();
diff --git a/app/src/main/java/ca/pkay/rcloneexplorer/RcloneRcd.java b/app/src/main/java/ca/pkay/rcloneexplorer/RcloneRcd.java
index ce6e451f8..f1258ec9a 100644
--- a/app/src/main/java/ca/pkay/rcloneexplorer/RcloneRcd.java
+++ b/app/src/main/java/ca/pkay/rcloneexplorer/RcloneRcd.java
@@ -170,9 +170,9 @@ public String[] getEnv() {
         String tmpDir = context.getCacheDir().getAbsolutePath();
         environmentValues.add("TMPDIR=" + tmpDir);
 
-        // ignore chtimes errors
-        // ref: https://github.com/rclone/rclone/issues/2446
-        environmentValues.add("RCLONE_LOCAL_NO_SET_MODTIME=true");
+        // See Rclone.java getRcloneEnv() for why RCLONE_LOCAL_NO_SET_MODTIME is
+        // deliberately not set here: it forces rclone's local-backend file
+        // comparison to silently ignore modification time (size-only fallback).
         return environmentValues.toArray(new String[0]);
     }