diff --git a/include/quill/backend/SignalHandler.h b/include/quill/backend/SignalHandler.h
index 13705dd6..58b553d1 100644
--- a/include/quill/backend/SignalHandler.h
+++ b/include/quill/backend/SignalHandler.h
@@ -44,7 +44,7 @@ QUILL_BEGIN_NAMESPACE
 
 namespace detail
 {
-static constexpr std::initializer_list<std::string_view> excluded_logger_name_substr = {"__csv__"};
+static constexpr std::string_view excluded_logger_name_substr = {"__csv__"};
 
 /***/
 class SignalHandlerContext
diff --git a/include/quill/core/LoggerManager.h b/include/quill/core/LoggerManager.h
index a8e63bd7..1ad6e632 100644
--- a/include/quill/core/LoggerManager.h
+++ b/include/quill/core/LoggerManager.h
@@ -70,7 +70,7 @@ class LoggerManager
   }
 
   /***/
-  QUILL_NODISCARD LoggerBase* get_valid_logger(std::initializer_list<std::string_view> exclude_logger_substrs = {}) const
+  QUILL_NODISCARD LoggerBase* get_valid_logger(std::string_view exclude_logger_substr = {}) const
   {
     // Retrieves any valid logger without the need for constructing a vector
     LockGuard const lock{_spinlock};
@@ -80,19 +80,11 @@ class LoggerManager
       // we can not add invalidated loggers as they can be removed at any time
       if (elem->is_valid_logger())
       {
-        // Check if any of the excluded substrings are found in the logger name
-        if (std::any_of(exclude_logger_substrs.begin(), exclude_logger_substrs.end(),
-                        [&elem](std::string_view exclude_substr)
-                        {
-                            return elem->get_logger_name().find(exclude_substr) != std::string::npos;
-                        }))
+        if (elem->get_logger_name().find(exclude_logger_substr) == std::string::npos)
         {
-          // Skip this logger since it matches an excluded substring
-          continue;
+          // Use this logger since it doesn't include the an excluded substring
+          return elem.get();
         }
-
-        // No excluded substring found, return this logger
-        return elem.get();
       }
     }
 
diff --git a/test/integration_tests/SignalHandlerTest.cpp b/test/integration_tests/SignalHandlerTest.cpp
index e9bd291d..6da7dcc9 100644
--- a/test/integration_tests/SignalHandlerTest.cpp
+++ b/test/integration_tests/SignalHandlerTest.cpp
@@ -2,16 +2,16 @@
 
 #include "misc/TestUtilities.h"
 #include "quill/Backend.h"
+#include "quill/CsvWriter.h"
 #include "quill/Frontend.h"
 #include "quill/LogMacros.h"
-#include "quill/CsvWriter.h"
 #include "quill/sinks/FileSink.h"
 
 #include <cstdio>
+#include <memory>
 #include <string>
 #include <string_view>
 #include <vector>
-#include <memory>
 
 using namespace quill;