diff --git a/src/cmd/go/alldocs.go b/src/cmd/go/alldocs.go
index db6372642a..a3c1fecb91 100644
--- a/src/cmd/go/alldocs.go
+++ b/src/cmd/go/alldocs.go
@@ -1708,7 +1708,7 @@
 // the package's source root (usually $GOPATH) or that consult environment
 // variables only match future runs in which the files and environment
 // variables are unchanged. A cached test result is treated as executing
-// in no time at all,so a successful package test result will be cached and
+// in no time at all, so a successful package test result will be cached and
 // reused regardless of -timeout setting.
 //
 // In addition to the build flags, the flags handled by 'go test' itself are:
diff --git a/src/cmd/go/internal/test/test.go b/src/cmd/go/internal/test/test.go
index 058906d9b8..aa5e41e004 100644
--- a/src/cmd/go/internal/test/test.go
+++ b/src/cmd/go/internal/test/test.go
@@ -132,7 +132,7 @@ test caching explicitly is to use -count=1. Tests that open files within
 the package's source root (usually $GOPATH) or that consult environment
 variables only match future runs in which the files and environment
 variables are unchanged. A cached test result is treated as executing
-in no time at all,so a successful package test result will be cached and
+in no time at all, so a successful package test result will be cached and
 reused regardless of -timeout setting.
 
 In addition to the build flags, the flags handled by 'go test' itself are: