diff --git a/infer/src/java/jSourceFileInfo.mll b/infer/src/java/jSourceFileInfo.mll
index 16f1146e6..9a7924966 100644
--- a/infer/src/java/jSourceFileInfo.mll
+++ b/infer/src/java/jSourceFileInfo.mll
@@ -372,30 +372,33 @@ and skip_comments action = parse
 
   (** We scan source file [file] and record location of each class declaration *)
   let collect_class_location (program:JClasspath.program) (file:SourceFile.t) =
-    let cin = In_channel.create (SourceFile.to_abs_path file) in
-    let stack = [] in
-    let record_location ~classname ~col ~line =
-      let loc : Location.t =  { line; col; file } in
-      let cn : JBasics.class_name = JBasics.make_cn classname in
-      Logging.debug Capture Verbose "set_java_location %s with location %a@."
-        (JBasics.cn_name cn) Location.pp_file_pos loc;
-      JClasspath.set_java_location program cn loc in
-    try (
-      class_scan { record_location; stack; } (from_channel cin) ;
-      In_channel.close cin )
-    with
-      | Failure s ->
-        raise
-          (Failure
-            (Printf.sprintf "Error parsing source file %s\n%s" (SourceFile.to_abs_path file) s))
-      | Missing_opening_bracket ->
-        raise
-           (Failure (Printf.sprintf "Missing opening bracket error while parsing source file %s\n"
-                       (SourceFile.to_abs_path file)))
-      | Missing_opening_parenthesis ->
-        raise
-           (Failure
-             (Printf.sprintf "Missing opening parenthesis error while parsing source file %s\n"
-                (SourceFile.to_abs_path file)))
-
+    let path = SourceFile.to_abs_path file in
+    if String.is_suffix path ~suffix:".java" then (
+      let cin = In_channel.create path in
+      let stack = [] in
+      let record_location ~classname ~col ~line =
+        let loc : Location.t =  { line; col; file } in
+        let cn : JBasics.class_name = JBasics.make_cn classname in
+        Logging.debug Capture Verbose "set_java_location %s with location %a@."
+          (JBasics.cn_name cn) Location.pp_file_pos loc;
+        JClasspath.set_java_location program cn loc in
+      try (
+        class_scan { record_location; stack; } (from_channel cin) ;
+        In_channel.close cin )
+      with
+        | Failure s ->
+          Logging.debug Capture Verbose "Error parsing source file %s\n%s"
+          (SourceFile.to_abs_path file) s;
+          In_channel.close cin
+        | Missing_opening_bracket ->
+          Logging.debug Capture Verbose
+            "Missing opening bracket error while parsing source file %s\n"
+            (SourceFile.to_abs_path file);
+          In_channel.close cin
+        | Missing_opening_parenthesis ->
+          Logging.debug Capture Verbose
+            "Missing opening parenthesis error while parsing source file %s\n"
+            (SourceFile.to_abs_path file);
+          In_channel.close cin
+    )
 }