diff --git a/mypy_ls/plugin.py b/mypy_ls/plugin.py
index 4c0c825..1d40406 100644
--- a/mypy_ls/plugin.py
+++ b/mypy_ls/plugin.py
@@ -173,7 +173,7 @@ def pyls_lint(config: Config, workspace: Workspace, document: Document,
     else:
         args = ["run", "--"] + args
 
-        log.info(f"executing dmypy args={args}")
+        log.info("executing dmypy args = %s", args")
         report, errors, _ = mypy_api.run_dmypy(args)
 
     log.debug("report:\n%s", report)
@@ -181,7 +181,7 @@ def pyls_lint(config: Config, workspace: Workspace, document: Document,
 
     diagnostics = []
     for line in report.splitlines():
-        log.debug(f"parsing: line = %r", line)
+        log.debug("parsing: line = %r", line)
         diag = parse_line(line, document)
         if diag:
             diagnostics.append(diag)
@@ -228,7 +228,7 @@ def init(workspace: str) -> Dict[str, str]:
 
     """
     # On windows the path contains \\ on linux it contains / all the code works with /
-    log.info(f"init workspace = %s", workspace)
+    log.info("init workspace = %s", workspace)
     workspace = workspace.replace("\\", "/")
 
     configuration = {}
@@ -248,7 +248,7 @@ def init(workspace: str) -> Dict[str, str]:
         tmpFile = tempfile.NamedTemporaryFile('w', delete=False)
         tmpFile.close()
 
-    log.info(f"mypyConfigFile = %s configuration = %s", mypyConfigFile, configuration)
+    log.info("mypyConfigFile = %s configuration = %s", mypyConfigFile, configuration)
     return configuration