diff --git a/components/bt/common/ble_log/extension/log_compression/CMakeLists.txt b/components/bt/common/ble_log/extension/log_compression/CMakeLists.txt
index b670eebe557..e35ae28aed3 100644
--- a/components/bt/common/ble_log/extension/log_compression/CMakeLists.txt
+++ b/components/bt/common/ble_log/extension/log_compression/CMakeLists.txt
@@ -118,6 +118,12 @@ if(LOG_COMPRESSED_MODULE)
         string(REPLACE ";" "|" MODULE_CODE_PATH "${LOG_COMPRESSED_MODULE_CODE_PATH}")
         set(MATCH_PATTERN "(${MODULE_CODE_PATH}).+\\.c")
         foreach(src ${srcs})
+            # Normalize absolute paths to relative paths (relative to CODE_BASE_PATH)
+            # so that pattern matching works and .compressed_srcs/ has a clean layout
+            if(IS_ABSOLUTE "${src}")
+                get_filename_component(src "${src}" ABSOLUTE)
+                file(RELATIVE_PATH src "${CODE_BASE_PATH}" "${src}")
+            endif()
             if(src MATCHES ${MATCH_PATTERN})
                 set(dest "${LOG_COMPRESSED_SRCS_DIR}/${src}")
                 file(WRITE "${dest}" "")
diff --git a/components/bt/common/ble_log/extension/log_compression/scripts/ble_log_compress.py b/components/bt/common/ble_log/extension/log_compression/scripts/ble_log_compress.py
index f4efceac5c2..7576a419768 100644
--- a/components/bt/common/ble_log/extension/log_compression/scripts/ble_log_compress.py
+++ b/components/bt/common/ble_log/extension/log_compression/scripts/ble_log_compress.py
@@ -663,9 +663,15 @@ class LogCompressor:
             compressed_file_cnt = 0
             total_cnt = 0
             for src in srcs:
-                if pattern.match(src):
-                    src_path = self.code_base_path / src
-                    dest_path = self.bt_compressed_srcs_path / src
+                # Convert absolute paths to relative (to code_base_path) for pattern matching
+                src_for_match = src
+                try:
+                    src_for_match = str(Path(src).relative_to(self.code_base_path))
+                except ValueError:
+                    pass  # Not under code_base_path, keep as-is
+                if pattern.match(src_for_match):
+                    src_path = self.code_base_path / src_for_match
+                    dest_path = self.bt_compressed_srcs_path / src_for_match
                     temp_path = f'{dest_path}.tmp'
                     total_cnt += 1
                     # Skip if already processed