diff --git a/extras/fixture/src/unity_fixture.c b/extras/fixture/src/unity_fixture.c
index 67e7b9d7e563dbbc4e32ff5bf28b2c3678c2d135..90314af48f6ac5f4be57276ef622f14f2705c567 100644
--- a/extras/fixture/src/unity_fixture.c
+++ b/extras/fixture/src/unity_fixture.c
@@ -23,9 +23,9 @@ void tearDown(void) { /*does nothing*/ }
 static void announceTestRun(unsigned int runNumber)
 {
     UnityPrint("Unity test run ");
-    UnityPrintNumber(runNumber+1);
+    UnityPrintNumberUnsigned(runNumber+1);
     UnityPrint(" of ");
-    UnityPrintNumber(UnityFixture.RepeatCount);
+    UnityPrintNumberUnsigned(UnityFixture.RepeatCount);
     UNITY_PRINT_EOL();
 }
 
@@ -45,7 +45,7 @@ int UnityMain(int argc, const char* argv[], void (*runAllTests)(void))
         UnityEnd();
     }
 
-    return Unity.TestFailures;
+    return (int)Unity.TestFailures;
 }
 
 static int selected(const char* filter, const char* name)
@@ -71,7 +71,7 @@ void UnityTestRunner(unityfunction* setup,
                      const char* printableName,
                      const char* group,
                      const char* name,
-                     const char* file, int line)
+                     const char* file, unsigned int line)
 {
     if (testSelected(name) && groupSelected(group))
     {
diff --git a/extras/fixture/src/unity_fixture_internals.h b/extras/fixture/src/unity_fixture_internals.h
index cd27ccfa6cda389b80dfd4e671d266998d4dec8c..1fdbb9893dac8d7275b2453e195598280ca974d7 100644
--- a/extras/fixture/src/unity_fixture_internals.h
+++ b/extras/fixture/src/unity_fixture_internals.h
@@ -23,7 +23,7 @@ void UnityTestRunner(unityfunction* setup,
                      const char* printableName,
                      const char* group,
                      const char* name,
-                     const char* file, int line);
+                     const char* file, unsigned int line);
 
 void UnityIgnoreTest(const char* printableName, const char* group, const char* name);
 void UnityMalloc_StartTest(void);
diff --git a/extras/fixture/test/Makefile b/extras/fixture/test/Makefile
index 66fc58be3be15d5441f272d5c09c9c77fd0d3075..f3f7ab1bc3bc8f70e2d912b384dcb3c2f5dde065 100644
--- a/extras/fixture/test/Makefile
+++ b/extras/fixture/test/Makefile
@@ -46,7 +46,7 @@ clean:
 # These extended flags DO get included before any target build runs
 CFLAGS += -Wbad-function-cast
 CFLAGS += -Wcast-qual
-#CFLAGS += -Wconversion
+CFLAGS += -Wconversion
 CFLAGS += -Wformat=2
 CFLAGS += -Wmissing-prototypes
 CFLAGS += -Wold-style-definition
diff --git a/extras/fixture/test/unity_fixture_Test.c b/extras/fixture/test/unity_fixture_Test.c
index 2a16e2d2a0cdca6b219a1f541ffd473568265a57..ffb5c2a0aff26b76d5182746b960903bfa375b9d 100644
--- a/extras/fixture/test/unity_fixture_Test.c
+++ b/extras/fixture/test/unity_fixture_Test.c
@@ -144,7 +144,7 @@ TEST(UnityFixture, FreeNULLSafety)
 TEST_GROUP(UnityCommandOptions);
 
 int savedVerbose;
-int savedRepeat;
+unsigned int savedRepeat;
 const char* savedName;
 const char* savedGroup;
 
diff --git a/extras/fixture/test/unity_output_Spy.c b/extras/fixture/test/unity_output_Spy.c
index 36bcf3751ce150915009875d7120edfb952a7442..97c952348c6bd1bebe22324f62b5ec7e0c47730c 100644
--- a/extras/fixture/test/unity_output_Spy.c
+++ b/extras/fixture/test/unity_output_Spy.c
@@ -22,7 +22,7 @@ void UnityOutputCharSpy_Create(int s)
     size = s;
     count = 0;
     spy_enable = 0;
-    buffer = malloc(size);
+    buffer = malloc((size_t)size);
     TEST_ASSERT_NOT_NULL_MESSAGE(buffer, "Internal malloc failed in Spy Create():" __FILE__);
     memset(buffer, 0, size);
 }
@@ -38,7 +38,7 @@ int UnityOutputCharSpy_OutputChar(int c)
     if (spy_enable)
     {
         if (count < (size-1))
-            buffer[count++] = c;
+            buffer[count++] = (char)c;
     }
     else
     {