diff --git a/libs/core/batch_environments/src/batch_environment.cpp b/libs/core/batch_environments/src/batch_environment.cpp
index 49d008aaa973..f56db2142ec7 100644
--- a/libs/core/batch_environments/src/batch_environment.cpp
+++ b/libs/core/batch_environments/src/batch_environment.cpp
@@ -121,7 +121,7 @@ namespace hpx::util {
     // this function initializes the map of nodes from the given a list of nodes
     std::string batch_environment::init_from_nodelist(
         std::vector<std::string> const& nodes, std::string const& agas_host,
-        bool have_tcp)
+        [[maybe_unused]] bool have_tcp)
     {
         if (debug_)
             std::cerr << "got node list" << std::endl;
@@ -246,7 +246,7 @@ namespace hpx::util {
     }
 
     std::string batch_environment::host_name(
-        std::string const& def_hpx_name) const
+        [[maybe_unused]] std::string const& def_hpx_name) const
     {
 #if defined(HPX_HAVE_PARCELPORT_TCP)
         std::string host = nodes_.empty() ? def_hpx_name : host_name();
diff --git a/libs/full/command_line_handling/src/command_line_handling.cpp b/libs/full/command_line_handling/src/command_line_handling.cpp
index a3c018f293f7..acd17480fe00 100644
--- a/libs/full/command_line_handling/src/command_line_handling.cpp
+++ b/libs/full/command_line_handling/src/command_line_handling.cpp
@@ -504,7 +504,7 @@ namespace hpx::util {
             agas_host.empty() ? HPX_INITIAL_IP_ADDRESS : agas_host);
 #endif
 
-        bool run_agas_server = false;
+        [[maybe_unused]] bool run_agas_server = false;
         [[maybe_unused]] std::string hpx_host;
         [[maybe_unused]] std::uint16_t hpx_port = 0;