diff --git a/src-cpp/randomjs/ProgramRunner.cpp b/src-cpp/randomjs/ProgramRunner.cpp
index c7c13fc..73ccabb 100644
--- a/src-cpp/randomjs/ProgramRunner.cpp
+++ b/src-cpp/randomjs/ProgramRunner.cpp
@@ -20,10 +20,12 @@ along with RandomJS.  If not, see<http://www.gnu.org/licenses/>.
 #include "ProgramRunner.h"
 #include "Program.h"
 #include <boost/process.hpp>
+#include <boost/filesystem.hpp>
 
 constexpr size_t programBufferCapacity = 256 * 1024;
 
 namespace bp = boost::process;
+namespace bf = boost::filesystem;
 
 void ProgramRunner::startProcess() {
 	delete runnerStdout;
@@ -39,7 +41,27 @@ void ProgramRunner::startProcess() {
 	}
 }
 
-ProgramRunner::ProgramRunner(const char* executable, bool searchPath, const char* arguments) 
+ProgramRunner::ProgramRunner(const char* self, const char* xs)
+	: stream(programBufferCapacity),
+	arguments(nullptr),
+	runner(nullptr),
+	runnerStdout(nullptr),
+	runnerStdin(nullptr)
+{
+	std::vector<bf::path> searchPaths;
+	auto basedir = bf::system_complete(self).parent_path();
+	searchPaths.push_back(basedir);
+	auto fullPath = bp::search_path(xs, searchPaths);
+	auto pathString = fullPath.string();
+	int allocationSize = pathString.length() + 1;
+	char* pathBuffer = new char[allocationSize];
+	std::copy(pathString.begin(), pathString.end(), pathBuffer);
+	pathBuffer[pathString.length()] = '\0';
+	this->executable = pathBuffer;
+	startProcess();
+}
+
+/*ProgramRunner::ProgramRunner(const char* executable, bool searchPath, const char* arguments)
 	: stream(programBufferCapacity),
 	arguments(arguments),
 	runner(nullptr),
@@ -56,7 +78,7 @@ ProgramRunner::ProgramRunner(const char* executable, bool searchPath, const char
 		this->executable = executable;
 	}
 	startProcess();
-}
+}*/
 
 void ProgramRunner::writeProgram(Program* p) {
 	stream.clear();
diff --git a/src-cpp/randomjs/ProgramRunner.h b/src-cpp/randomjs/ProgramRunner.h
index 6195f46..e12ff8e 100644
--- a/src-cpp/randomjs/ProgramRunner.h
+++ b/src-cpp/randomjs/ProgramRunner.h
@@ -42,7 +42,8 @@ namespace boost {
 class ProgramRunner
 {
 public:
-	ProgramRunner(const char* executable, bool searchPath = false, const char* arguments = nullptr);
+	ProgramRunner(const char* self, const char* xs);
+	//ProgramRunner(const char* executable, bool searchPath = false, const char* arguments = nullptr);
 	void writeProgram(Program*);
 	const char* getProgramBuffer() const {
 		return stream.data();
diff --git a/src-cpp/randomjs/main.cpp b/src-cpp/randomjs/main.cpp
index efa152d..1c4209a 100644
--- a/src-cpp/randomjs/main.cpp
+++ b/src-cpp/randomjs/main.cpp
@@ -47,7 +47,7 @@ int main(int argc, char** argv) {
 								0xea, 0x00, 0x00, 0x00, 0x00, 0x77, 0xb2, 0x06, 0xa0, 0x2c, 0xa5, 0xb1, 0xd4, 0xce, 0x6b, 0xbf, 0xdf, 0x0a, 0xca, 
 								0xc3, 0x8b, 0xde, 0xd3, 0x4d, 0x2d, 0xcd, 0xee, 0xf9, 0x5c, 0xd2, 0x0c, 0xef, 0xc1, 0x2f, 0x61, 0xd5, 0x61, 0x09 
 							};
-	ProgramRunner runner("./xst");
+	ProgramRunner runner(argv[0], "xst");
 	int* nonce = (int*)(blockTemplate + 39);
 	RandomGenerator rand;
 	ProgramFactory pf(rand);