diff --git a/os/services/shell/shell.h b/os/services/shell/shell.h
index d89672a13..de8b312ab 100644
--- a/os/services/shell/shell.h
+++ b/os/services/shell/shell.h
@@ -70,7 +70,7 @@
 
 /* Printf-formatted output via a given output function */
 #define SHELL_OUTPUT(output_func, format, ...) do { \
-		char buffer[128]; \
+		char buffer[192]; \
 	  snprintf(buffer, sizeof(buffer), format, ##__VA_ARGS__); \
 		(output_func)(buffer); \
   } while(0);