diff --git a/runsuite.c b/runsuite.c
index 2a126ff9..40aaf132 100644
--- a/runsuite.c
+++ b/runsuite.c
@@ -1010,7 +1010,7 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
     int ret = 0;
     int old_errors, old_tests, old_leaks, expected_errors;
 
-    logfile = fopen(LOGFILE, "w");
+    logfile = fopen(LOGFILE, "wb");
     if (logfile == NULL) {
         fprintf(stderr,
 	        "Could not open the log file, running in verbose mode\n");
diff --git a/runxmlconf.c b/runxmlconf.c
index dab65a4a..62401e8e 100644
--- a/runxmlconf.c
+++ b/runxmlconf.c
@@ -545,7 +545,7 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
     int ret = 0;
     int old_errors, old_tests, old_leaks;
 
-    logfile = fopen(LOGFILE, "w");
+    logfile = fopen(LOGFILE, "wb");
     if (logfile == NULL) {
         fprintf(stderr,
 	        "Could not open the log file, running in verbose mode\n");
diff --git a/shell.c b/shell.c
index 788e5136..fc174021 100644
--- a/shell.c
+++ b/shell.c
@@ -807,7 +807,7 @@ xmllintShellWrite(xmllintShellCtxtPtr ctxt, char *filename, xmlNodePtr node,
         default:{
                 FILE *f;
 
-                f = fopen((char *) filename, "w");
+                f = fopen((char *) filename, "wb");
                 if (f == NULL) {
                     fprintf(ctxt->output,
                                     "Failed to write to %s\n", filename);
diff --git a/xmlcatalog.c b/xmlcatalog.c
index 37271643..a1cd9870 100644
--- a/xmlcatalog.c
+++ b/xmlcatalog.c
@@ -487,7 +487,7 @@ int main(int argc, char **argv) {
 		    if (xmlCatalogIsEmpty(catal)) {
 			remove(argv[i + 1]);
 		    } else {
-			out = fopen(argv[i + 1], "w");
+			out = fopen(argv[i + 1], "wb");
 			if (out == NULL) {
 			    fprintf(stderr, "could not open %s for saving\n",
 				    argv[i + 1]);
@@ -502,7 +502,7 @@ int main(int argc, char **argv) {
 			if (xmlCatalogIsEmpty(super)) {
 			    remove(XML_SGML_DEFAULT_CATALOG);
 			} else {
-			    out = fopen(XML_SGML_DEFAULT_CATALOG, "w");
+			    out = fopen(XML_SGML_DEFAULT_CATALOG, "wb");
 			    if (out == NULL) {
 				fprintf(stderr,
 					"could not open %s for saving\n",
@@ -592,7 +592,7 @@ int main(int argc, char **argv) {
 	if (noout && filename && *filename) {
 	    FILE *out;
 
-	    out = fopen(filename, "w");
+	    out = fopen(filename, "wb");
 	    if (out == NULL) {
 		fprintf(stderr, "could not open %s for saving\n", filename);
 		exit_value = 2;