diff --git a/synfig-core/src/tool/joblistprocessor.cpp b/synfig-core/src/tool/joblistprocessor.cpp
index 73196fc..9e1f5c7 100644
--- a/synfig-core/src/tool/joblistprocessor.cpp
+++ b/synfig-core/src/tool/joblistprocessor.cpp
@@ -169,7 +169,7 @@ bool setup_job(Job& job, const TargetParam& target_parameters)
             (boost::format(_("Unable to create output for \"%s\": %s"))
                            % job.filename % strerror(errno)).str();
 		synfig::error(message.c_str());*/
-		synfig::error(_("Unable to create output for \"%s\": %s"), job.filename, strerror(errno));
+		synfig::error(_("Unable to create output for \"%s\": %s"), job.filename.c_str(), strerror(errno));
 		synfig::error(_("Throwing out job..."));
 		return false;
 	}
@@ -191,7 +191,7 @@ bool setup_job(Job& job, const TargetParam& target_parameters)
                                % job.filename % strerror(errno)).str();
 		    synfig::error(message.c_str());*/
 
-			synfig::error(_("Unknown target for \"%s\": %s"), job.filename, strerror(errno));
+			synfig::error(_("Unknown target for \"%s\": %s"), job.filename.c_str(), strerror(errno));
 			synfig::error(_("Throwing out job..."));
 			return false;
 		}
diff --git a/synfig-core/src/tool/optionsprocessor.cpp b/synfig-core/src/tool/optionsprocessor.cpp
index ccd1442..3372eed 100644
--- a/synfig-core/src/tool/optionsprocessor.cpp
+++ b/synfig-core/src/tool/optionsprocessor.cpp
@@ -479,7 +479,7 @@ TargetParam OptionsProcessor::extract_targetparam()
 		if (!found)
 		{
 		    throw SynfigToolException(SYNFIGTOOL_UNKNOWNARGUMENT,
-                                      etl::strprintf(_("Video codec \"%s\" is not supported."), params.video_codec));
+                                      etl::strprintf(_("Video codec \"%s\" is not supported."), params.video_codec.c_str()));
 		}
 
 		VERBOSE_OUT(1) << _("Target video codec set to: ") << params.video_codec << std::endl;
@@ -537,7 +537,7 @@ Job OptionsProcessor::extract_job()
 		if(!job.canvas)
 		{
 		    throw SynfigToolException(SYNFIGTOOL_FILENOTFOUND,
-                                      etl::strprintf(_("Unable to load file '%s'."), job.filename));
+                                      etl::strprintf(_("Unable to load file '%s'."), job.filename.c_str()));
 		}
 
 		job.root->set_time(0);
@@ -591,14 +591,14 @@ Job OptionsProcessor::extract_job()
 			throw SynfigToolException(SYNFIGTOOL_INVALIDJOB,
 					etl::strprintf(_("Unable to find canvas with ID \"%s\" in %s.\n"
                                     "Throwing out job..."), 
-									canvasid, job.filename));
+									canvasid.c_str(), job.filename.c_str()));
 		}
 		catch(Exception::BadLinkName&)
 		{
 		    throw SynfigToolException(SYNFIGTOOL_INVALIDJOB,
                     etl::strprintf(_("Invalid canvas name \"%s\" in %s.\n"
                                     "Throwing out job..."),
-                                   	canvasid, job.filename)); // FIXME: is here must be canvasid nor canvasname?
+                                   	canvasid.c_str(), job.filename.c_str())); // FIXME: is here must be canvasid nor canvasname?
 		}
 
 		// Later we need to set the other parameters for the jobs
diff --git a/synfig-core/src/tool/renderprogress.cpp b/synfig-core/src/tool/renderprogress.cpp
index 0a3c8c7..4b90d13 100644
--- a/synfig-core/src/tool/renderprogress.cpp
+++ b/synfig-core/src/tool/renderprogress.cpp
@@ -76,7 +76,7 @@ bool RenderProgress::amount_complete(int current_frame, int frames_count)
 
         outputStream << "\r"
                      << etl::strprintf(_("%s: Frame %d of %d (%d%%). Remaining time: "), 
-                        taskname_, current_frame, frames_count, percentage_completed);
+                        taskname_.c_str(), current_frame, frames_count, percentage_completed);
 
         if (current_frame != last_frame_)
         {