diff --git a/ihex.c b/ihex.c
index 860a8ad..642d54f 100644
--- a/ihex.c
+++ b/ihex.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <ctype.h>
 #include <string.h>
 #include "ihex.h"
 
@@ -131,6 +132,7 @@ uint8_t IHEX_ReadFile(FILE *fp, uint8_t *data, uint16_t maxlen, uint16_t *max_ad
   uint8_t i;
   uint8_t byte;
   char str[128];
+  char *end;
 
   addr = 0;
   segment = 0;
@@ -138,6 +140,10 @@ uint8_t IHEX_ReadFile(FILE *fp, uint8_t *data, uint16_t maxlen, uint16_t *max_ad
   {
     if (fgets(str, sizeof(str), fp) == NULL)
       return IHEX_ERROR_FILE;
+    // trim whitespace on the right
+    end = str + strlen(str) - 1;
+    while (end > str && isspace((unsigned char) *end)) end--;
+    end[1] = '\0';
     if (strlen(str) < IHEX_MIN_STRING)
       return IHEX_ERROR_FMT;
     len = IHEX_GetByte(&str[IHEX_OFFS_LEN]);
diff --git a/ihex.h b/ihex.h
index d2f2f83..e96c6cf 100644
--- a/ihex.h
+++ b/ihex.h
@@ -6,7 +6,7 @@
 #include <stdbool.h>
 
 #define IHEX_LINE_LENGTH    16
-#define IHEX_MIN_STRING     12
+#define IHEX_MIN_STRING     11
 
 #define IHEX_OFFS_LEN       1
 #define IHEX_OFFS_ADDR      3