diff --git a/assert/assertions.go b/assert/assertions.go
index 6355dd2cf..fa1245b18 100644
--- a/assert/assertions.go
+++ b/assert/assertions.go
@@ -8,6 +8,7 @@ import (
 	"fmt"
 	"math"
 	"os"
+	"path/filepath"
 	"reflect"
 	"regexp"
 	"runtime"
@@ -144,7 +145,8 @@ func CallerInfo() []string {
 		if len(parts) > 1 {
 			dir := parts[len(parts)-2]
 			if (dir != "assert" && dir != "mock" && dir != "require") || file == "mock_test.go" {
-				callers = append(callers, fmt.Sprintf("%s:%d", file, line))
+				path, _ := filepath.Abs(file)
+				callers = append(callers, fmt.Sprintf("%s:%d", path, line))
 			}
 		}
 
diff --git a/mock/mock_test.go b/mock/mock_test.go
index 5cb40e366..f77dfe461 100644
--- a/mock/mock_test.go
+++ b/mock/mock_test.go
@@ -151,7 +151,7 @@ func Test_Mock_Chained_On(t *testing.T) {
 	var mockedService = new(TestExampleImplementation)
 
 	// determine our current line number so we can assert the expected calls callerInfo properly
-	_, _, line, _ := runtime.Caller(0)
+	_, filename, line, _ := runtime.Caller(0)
 	mockedService.
 		On("TheExampleMethod", 1, 2, 3).
 		Return(0).
@@ -164,14 +164,14 @@ func Test_Mock_Chained_On(t *testing.T) {
 			Method:          "TheExampleMethod",
 			Arguments:       []interface{}{1, 2, 3},
 			ReturnArguments: []interface{}{0},
-			callerInfo:      []string{fmt.Sprintf("mock_test.go:%d", line+2)},
+			callerInfo:      []string{fmt.Sprintf("%s:%d", filename, line+2)},
 		},
 		{
 			Parent:          &mockedService.Mock,
 			Method:          "TheExampleMethod3",
 			Arguments:       []interface{}{AnythingOfType("*mock.ExampleType")},
 			ReturnArguments: []interface{}{nil},
-			callerInfo:      []string{fmt.Sprintf("mock_test.go:%d", line+4)},
+			callerInfo:      []string{fmt.Sprintf("%s:%d", filename, line+4)},
 		},
 	}
 	assert.Equal(t, expectedCalls, mockedService.ExpectedCalls)
@@ -521,7 +521,7 @@ func Test_Mock_Chained_UnsetOnlyUnsetsLastCall(t *testing.T) {
 	var mockedService = new(TestExampleImplementation)
 
 	// determine our current line number so we can assert the expected calls callerInfo properly
-	_, _, line, _ := runtime.Caller(0)
+	_, filename, line, _ := runtime.Caller(0)
 	mockedService.
 		On("TheExampleMethod1", 1, 1).
 		Return(0).
@@ -536,14 +536,14 @@ func Test_Mock_Chained_UnsetOnlyUnsetsLastCall(t *testing.T) {
 			Method:          "TheExampleMethod1",
 			Arguments:       []interface{}{1, 1},
 			ReturnArguments: []interface{}{0},
-			callerInfo:      []string{fmt.Sprintf("mock_test.go:%d", line+2)},
+			callerInfo:      []string{fmt.Sprintf("%s:%d", filename, line+2)},
 		},
 		{
 			Parent:          &mockedService.Mock,
 			Method:          "TheExampleMethod2",
 			Arguments:       []interface{}{2, 2},
 			ReturnArguments: []interface{}{},
-			callerInfo:      []string{fmt.Sprintf("mock_test.go:%d", line+4)},
+			callerInfo:      []string{fmt.Sprintf("%s:%d", filename, line+4)},
 		},
 	}
 	assert.Equal(t, 2, len(expectedCalls))