diff --git a/CHANGES.md b/CHANGES.md
index feaafc9..a181270 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -5,6 +5,7 @@ Changes in PDFio
 v1.5.2 - YYYY-MM-DD
 -------------------
 
+- Updated maximum allowed PDF string size to 64k (Issue #117)
 - Fixed parsing of certain date/time values (Issue #115)
 - Fixed support for empty name values (Issue #116)
 
diff --git a/pdfio-private.h b/pdfio-private.h
index 7871a1a..ff3717c 100644
--- a/pdfio-private.h
+++ b/pdfio-private.h
@@ -94,6 +94,7 @@
 //
 
 #  define PDFIO_MAX_DEPTH	32	// Maximum nesting depth for values
+#  define PDFIO_MAX_STRING	65536	// Maximum length of string
 
 typedef void (*_pdfio_extfree_t)(void *);
 					// Extension data free function
diff --git a/pdfio-value.c b/pdfio-value.c
index d348ec5..6203b4d 100644
--- a/pdfio-value.c
+++ b/pdfio-value.c
@@ -125,7 +125,8 @@ _pdfioValueDecrypt(pdfio_file_t   *pdf,	// I - PDF file
   _pdfio_crypto_ctx_t	ctx;		// Decryption context
   _pdfio_crypto_cb_t	cb;		// Decryption callback
   size_t		ivlen;		// Number of initialization vector bytes
-  uint8_t		temp[32768];	// Temporary buffer for decryption
+  uint8_t		temp[PDFIO_MAX_STRING + 32];
+					// Temporary buffer for decryption
   size_t		templen;	// Number of actual data bytes
   time_t		timeval;	// Date/time value
 
@@ -300,7 +301,7 @@ _pdfioValueRead(pdfio_file_t   *pdf,	// I - PDF file
                 _pdfio_value_t *v,	// I - Value
                 size_t         depth)	// I - Depth of value
 {
-  char		token[32768];		// Token buffer
+  char		token[PDFIO_MAX_STRING];// Token buffer
   time_t	timeval;		// Date/time value
 #ifdef DEBUG
   static const char * const valtypes[] =
@@ -546,7 +547,8 @@ _pdfioValueWrite(pdfio_file_t   *pdf,	// I - PDF file
     case PDFIO_VALTYPE_BINARY :
         {
           size_t	databytes;	// Bytes to write
-          uint8_t	temp[32768],	// Temporary buffer for encryption
+          uint8_t	temp[PDFIO_MAX_STRING + 32],
+					// Temporary buffer for encryption
 			*dataptr;	// Pointer into data
 
           if (obj && pdf->encryption)
@@ -609,7 +611,8 @@ _pdfioValueWrite(pdfio_file_t   *pdf,	// I - PDF file
 	  if (obj && pdf->encryption)
 	  {
 	    // Write encrypted string...
-	    uint8_t	temp[32768],	// Encrypted bytes
+	    uint8_t	temp[PDFIO_MAX_STRING + 32],
+					// Encrypted bytes
 			*tempptr;	// Pointer into encrypted bytes
 	    _pdfio_crypto_ctx_t ctx;	// Encryption context
 	    _pdfio_crypto_cb_t cb;	// Encryption callback
@@ -660,7 +663,8 @@ _pdfioValueWrite(pdfio_file_t   *pdf,	// I - PDF file
         if (obj && pdf->encryption)
         {
           // Write encrypted string...
-          uint8_t	temp[32768],	// Encrypted bytes
+          uint8_t	temp[PDFIO_MAX_STRING + 32],
+					// Encrypted bytes
 			*tempptr;	// Pointer into encrypted bytes
           _pdfio_crypto_ctx_t ctx;	// Encryption context
           _pdfio_crypto_cb_t cb;	// Encryption callback