diff --git a/lfs.c b/lfs.c
index 88e57f2e..d99a5948 100644
--- a/lfs.c
+++ b/lfs.c
@@ -9760,18 +9760,18 @@ static inline bool lfsr_o_isappend(uint32_t flags) {
     return flags & LFS_O_APPEND;
 }
 
+static inline bool lfsr_o_isflush(uint32_t flags) {
+    return flags & LFS_O_FLUSH;
+}
+
 static inline bool lfsr_o_issync(uint32_t flags) {
-    return flags & LFS_O_SYNC;
+    return flags & (LFS_O_SYNC ^ LFS_O_FLUSH);
 }
 
 static inline bool lfsr_o_isdesync(uint32_t flags) {
     return flags & LFS_O_DESYNC;
 }
 
-static inline bool lfsr_o_isflush(uint32_t flags) {
-    return flags & LFS_O_FLUSH;
-}
-
 static inline bool lfsr_f_isunflush(uint32_t flags) {
     return flags & LFS_F_UNFLUSH;
 }
diff --git a/lfs.h b/lfs.h
index 33b605a8..3c1bff24 100644
--- a/lfs.h
+++ b/lfs.h
@@ -137,9 +137,9 @@ enum lfs_open_flags {
     LFS_O_EXCL      = 0x0008,   // Fail if a file already exists
     LFS_O_TRUNC     = 0x0010,   // Truncate the existing file to zero size
     LFS_O_APPEND    = 0x0020,   // Move to end of file on every write
-    LFS_O_SYNC      = 0x0040,   // Sync metadata on every write
-    LFS_O_DESYNC    = 0x0080,   // Do not sync or recieve file updates
-    LFS_O_FLUSH     = 0x0100,   // Flush data on every write
+    LFS_O_FLUSH     = 0x0040,   // Flush data on every write
+    LFS_O_SYNC      = 0x00c0,   // Sync metadata on every write
+    LFS_O_DESYNC    = 0x0100,   // Do not sync or recieve file updates
 #endif
 
     // internally used flags