diff --git a/fp2bit.c b/fp2bit.c
index dab981c..3277acc 100644
--- a/fp2bit.c
+++ b/fp2bit.c
@@ -12,7 +12,7 @@
 int main(int argc, char** argv)
 {
 	struct fpga_model model;
-	FILE* fp, *fbits;
+	FILE *fbits, *fp = 0;
 	int rc = -1;
 
 	fbits = 0;
@@ -45,9 +45,11 @@ int main(int argc, char** argv)
 
 	if ((rc = read_floorplan(&model, fp))) goto fail;
 	if ((rc = write_bitfile(fbits, &model))) goto fail;
+	fclose(fp);
 	fclose(fbits);
 	return EXIT_SUCCESS;
 fail:
+	if (fp) fclose(fp);
 	if (fbits) fclose(fbits);
 	return rc;
 }
diff --git a/hstrrep.c b/hstrrep.c
index f858284..cdf8878 100644
--- a/hstrrep.c
+++ b/hstrrep.c
@@ -106,5 +106,6 @@ int main(int argc, char** argv)
 	fclose(fp);
 	return EXIT_SUCCESS;
 xout:
+	if (fp) fclose(fp);
 	return EXIT_FAILURE;
 }
diff --git a/pair2net.c b/pair2net.c
index 1a74597..063d2f6 100644
--- a/pair2net.c
+++ b/pair2net.c
@@ -197,7 +197,9 @@ int main(int argc, char** argv)
 	if (rc) goto xout;
 	rc = print_nets(nets, &connpt_names);
 	if (rc) goto xout;
+	fclose(fp);
 	return EXIT_SUCCESS;
 xout:
+	if(fp) fclose(fp);
 	return EXIT_FAILURE;
 }
diff --git a/sort_seq.c b/sort_seq.c
index 49514fa..c9d8bca 100644
--- a/sort_seq.c
+++ b/sort_seq.c
@@ -419,7 +419,9 @@ int main(int argc, char** argv)
 		} else
 			s_numlines = 0;
 	}
+	fclose(fp);
 	return EXIT_SUCCESS;
 xout:
+	if(fp) fclose(fp);
 	return EXIT_FAILURE;
 }