diff --git a/xpcom/tests/TestBuffers.cpp b/xpcom/tests/TestBuffers.cpp
index ff051a0cd6d..403ec3feb26 100644
--- a/xpcom/tests/TestBuffers.cpp
+++ b/xpcom/tests/TestBuffers.cpp
@@ -172,7 +172,7 @@ TestMallocBuffers(PRUint32 growByPages, PRUint32 pageCount)
     rv = NS_NewBuffer(&buffer,
                       NS_PAGEMGR_PAGE_SIZE * growByPages, 
                       NS_PAGEMGR_PAGE_SIZE * pageCount,
-					  nsnull);
+                      nsnull);
     if (NS_FAILED(rv)) {
         printf("failed to create buffer\n");
         return rv;
@@ -192,7 +192,7 @@ TestPageBuffers(PRUint32 growByPages, PRUint32 pageCount)
     rv = NS_NewPageBuffer(&buffer,
                           NS_PAGEMGR_PAGE_SIZE * growByPages,
                           NS_PAGEMGR_PAGE_SIZE * pageCount,
-						  nsnull);
+                          nsnull);
     if (NS_FAILED(rv)) {
         printf("failed to create buffer\n");
         return rv;
diff --git a/xpcom/tests/TestPipes.cpp b/xpcom/tests/TestPipes.cpp
index 3e5320396ea..36a9c516439 100644
--- a/xpcom/tests/TestPipes.cpp
+++ b/xpcom/tests/TestPipes.cpp
@@ -169,7 +169,7 @@ main(int argc, char* argv[])
     }
 #endif
     // test for small buffers
-    rv = NS_NewPipe(&in, &out, 12, 24, PR_FALSE, nsnull);
+    rv = NS_NewPipe(&in, &out, 12, 24, PR_TRUE, nsnull);
     if (NS_FAILED(rv)) {
         printf("NewPipe failed\n");
         return -1;
@@ -184,7 +184,7 @@ main(int argc, char* argv[])
     }
 
     // test for large buffers
-    rv = NS_NewPipe(&in, &out, 4096, 4096*16, PR_FALSE, nsnull);
+    rv = NS_NewPipe(&in, &out, 4096, 4096*16, PR_TRUE, nsnull);
     if (NS_FAILED(rv)) {
         printf("NewPipe failed\n");
         return -1;