diff --git a/src/unity.c b/src/unity.c
index 510cad0dd4b37ab890fe99b731d7dd4e2bc0ce6c..660bfd6ccc221eafb24abb9af3689ab0d7f40267 100644
--- a/src/unity.c
+++ b/src/unity.c
@@ -7,6 +7,12 @@
 #include "unity.h"
 #include <stddef.h>
 
+#ifdef AVR
+#include <avr/pgmspace.h>
+#else
+#define PROGMEM
+#endif
+
 /* If omitted from header, declare overrideable prototypes here so they're ready for use */
 #ifdef UNITY_OMIT_OUTPUT_CHAR_HEADER_DECLARATION
 void UNITY_OUTPUT_CHAR(int);
@@ -20,48 +26,48 @@ void UNITY_OUTPUT_CHAR(int);
 struct UNITY_STORAGE_T Unity;
 
 #ifdef UNITY_OUTPUT_COLOR
-const char UnityStrOk[]                            = "\033[42mOK\033[00m";
-const char UnityStrPass[]                          = "\033[42mPASS\033[00m";
-const char UnityStrFail[]                          = "\033[41mFAIL\033[00m";
-const char UnityStrIgnore[]                        = "\033[43mIGNORE\033[00m";
+const char PROGMEM UnityStrOk[]                            = "\033[42mOK\033[00m";
+const char PROGMEM UnityStrPass[]                          = "\033[42mPASS\033[00m";
+const char PROGMEM UnityStrFail[]                          = "\033[41mFAIL\033[00m";
+const char PROGMEM UnityStrIgnore[]                        = "\033[43mIGNORE\033[00m";
 #else
-const char UnityStrOk[]                            = "OK";
-const char UnityStrPass[]                          = "PASS";
-const char UnityStrFail[]                          = "FAIL";
-const char UnityStrIgnore[]                        = "IGNORE";
+const char PROGMEM UnityStrOk[]                            = "OK";
+const char PROGMEM UnityStrPass[]                          = "PASS";
+const char PROGMEM UnityStrFail[]                          = "FAIL";
+const char PROGMEM UnityStrIgnore[]                        = "IGNORE";
 #endif
-static const char UnityStrNull[]                   = "NULL";
-static const char UnityStrSpacer[]                 = ". ";
-static const char UnityStrExpected[]               = " Expected ";
-static const char UnityStrWas[]                    = " Was ";
-static const char UnityStrGt[]                     = " to be greater than ";
-static const char UnityStrLt[]                     = " to be less than ";
-static const char UnityStrOrEqual[]                = "or equal to ";
-static const char UnityStrElement[]                = " Element ";
-static const char UnityStrByte[]                   = " Byte ";
-static const char UnityStrMemory[]                 = " Memory Mismatch.";
-static const char UnityStrDelta[]                  = " Values Not Within Delta ";
-static const char UnityStrPointless[]              = " You Asked Me To Compare Nothing, Which Was Pointless.";
-static const char UnityStrNullPointerForExpected[] = " Expected pointer to be NULL";
-static const char UnityStrNullPointerForActual[]   = " Actual pointer was NULL";
+static const char PROGMEM UnityStrNull[]                   = "NULL";
+static const char PROGMEM UnityStrSpacer[]                 = ". ";
+static const char PROGMEM UnityStrExpected[]               = " Expected ";
+static const char PROGMEM UnityStrWas[]                    = " Was ";
+static const char PROGMEM UnityStrGt[]                     = " to be greater than ";
+static const char PROGMEM UnityStrLt[]                     = " to be less than ";
+static const char PROGMEM UnityStrOrEqual[]                = "or equal to ";
+static const char PROGMEM UnityStrElement[]                = " Element ";
+static const char PROGMEM UnityStrByte[]                   = " Byte ";
+static const char PROGMEM UnityStrMemory[]                 = " Memory Mismatch.";
+static const char PROGMEM UnityStrDelta[]                  = " Values Not Within Delta ";
+static const char PROGMEM UnityStrPointless[]              = " You Asked Me To Compare Nothing, Which Was Pointless.";
+static const char PROGMEM UnityStrNullPointerForExpected[] = " Expected pointer to be NULL";
+static const char PROGMEM UnityStrNullPointerForActual[]   = " Actual pointer was NULL";
 #ifndef UNITY_EXCLUDE_FLOAT
-static const char UnityStrNot[]                    = "Not ";
-static const char UnityStrInf[]                    = "Infinity";
-static const char UnityStrNegInf[]                 = "Negative Infinity";
-static const char UnityStrNaN[]                    = "NaN";
-static const char UnityStrDet[]                    = "Determinate";
-static const char UnityStrInvalidFloatTrait[]      = "Invalid Float Trait";
+static const char PROGMEM UnityStrNot[]                    = "Not ";
+static const char PROGMEM UnityStrInf[]                    = "Infinity";
+static const char PROGMEM UnityStrNegInf[]                 = "Negative Infinity";
+static const char PROGMEM UnityStrNaN[]                    = "NaN";
+static const char PROGMEM UnityStrDet[]                    = "Determinate";
+static const char PROGMEM UnityStrInvalidFloatTrait[]      = "Invalid Float Trait";
 #endif
-const char UnityStrErrShorthand[]                  = "Unity Shorthand Support Disabled";
-const char UnityStrErrFloat[]                      = "Unity Floating Point Disabled";
-const char UnityStrErrDouble[]                     = "Unity Double Precision Disabled";
-const char UnityStrErr64[]                         = "Unity 64-bit Support Disabled";
-static const char UnityStrBreaker[]                = "-----------------------";
-static const char UnityStrResultsTests[]           = " Tests ";
-static const char UnityStrResultsFailures[]        = " Failures ";
-static const char UnityStrResultsIgnored[]         = " Ignored ";
-static const char UnityStrDetail1Name[]            = UNITY_DETAIL1_NAME " ";
-static const char UnityStrDetail2Name[]            = " " UNITY_DETAIL2_NAME " ";
+const char PROGMEM UnityStrErrShorthand[]                  = "Unity Shorthand Support Disabled";
+const char PROGMEM UnityStrErrFloat[]                      = "Unity Floating Point Disabled";
+const char PROGMEM UnityStrErrDouble[]                     = "Unity Double Precision Disabled";
+const char PROGMEM UnityStrErr64[]                         = "Unity 64-bit Support Disabled";
+static const char PROGMEM UnityStrBreaker[]                = "-----------------------";
+static const char PROGMEM UnityStrResultsTests[]           = " Tests ";
+static const char PROGMEM UnityStrResultsFailures[]        = " Failures ";
+static const char PROGMEM UnityStrResultsIgnored[]         = " Ignored ";
+static const char PROGMEM UnityStrDetail1Name[]            = UNITY_DETAIL1_NAME " ";
+static const char PROGMEM UnityStrDetail2Name[]            = " " UNITY_DETAIL2_NAME " ";
 
 /*-----------------------------------------------
  * Pretty Printers & Test Result Output Handlers