diff --git a/src/main.cc b/src/main.cc
index eff5ec3..e7835d7 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -8,7 +8,7 @@
 #include <string.h>
 
 static char preprocessed_fname[] = "/tmp/cxlppXXXXXX";
-static char c_fname[] = "/tmp/cxlcXXXXXX";
+static char c_fname[] = "/tmp/cxlcXXXXXX.c";
 static bool preprocessed_fname_created = false;
 static bool c_fname_created = false;
 
@@ -71,7 +71,7 @@ void write_node(FILE * file, Node * node)
 
 bool emit_c(Node * node)
 {
-    int fd = mkstemp(c_fname);
+    int fd = mkstemps(c_fname, 2);
     if (fd < 0)
     {
         perror("mkstemp");
@@ -94,7 +94,7 @@ bool compile()
     }
     else if (pid == 0)
     {
-        execlp("gcc", "gcc", "-x", "c", "-c", c_fname, "-o", "out.o", NULL);
+        execlp("gcc", "gcc", "-c", c_fname, "-o", "out.o", NULL);
     }
     else
     {