diff --git a/client/emv/dump.c b/client/emv/dump.c
index a699b188d..47de7c3c2 100644
--- a/client/emv/dump.c
+++ b/client/emv/dump.c
@@ -20,7 +20,7 @@
 #include "dump.h"
 
 
-#define PRINT_INDENT(level) 	{for (int i = 0; i < (level); i++) fprintf(f, "\t");}
+#define PRINT_INDENT(level) 	{for (int i = 0; i < (level); i++) fprintf(f, "   ");}
 
 void dump_buffer_simple(const unsigned char *ptr, size_t len, FILE *f)
 {
diff --git a/client/emv/emv_tags.c b/client/emv/emv_tags.c
index a29b15048..fdccb8923 100644
--- a/client/emv/emv_tags.c
+++ b/client/emv/emv_tags.c
@@ -23,7 +23,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define PRINT_INDENT(level) 	{for (int i = 0; i < (level); i++) fprintf(f, "\t");}
+#define PRINT_INDENT(level) 	{for (int i = 0; i < (level); i++) fprintf(f, "   ");}
 
 enum emv_tag_t {
 	EMV_TAG_GENERIC,