diff --git a/CleanSpec.mk b/CleanSpec.mk
index b84e1b6..841ad16 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -44,6 +44,10 @@
 #$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
 #$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
 
+# Switching to jemalloc requires deleting these files.
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libc_*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libc_*)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/libc/Android.mk b/libc/Android.mk
index 5acdd6b..765f4d2 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -515,12 +515,13 @@
   libc_common_cflags += -DDEBUG
 endif
 
-ifeq ($(MALLOC_IMPL),jemalloc)
-  libc_common_cflags += -DUSE_JEMALLOC
-  libc_malloc_src := bionic/jemalloc_wrapper.cpp
-else
+ifeq ($(MALLOC_IMPL),dlmalloc)
   libc_common_cflags += -DUSE_DLMALLOC
   libc_malloc_src := bionic/dlmalloc.c
+else
+  libc_common_cflags += -DUSE_JEMALLOC
+  libc_malloc_src := bionic/jemalloc_wrapper.cpp
+  libc_common_c_includes += external/jemalloc/include
 endif
 
 # To customize dlmalloc's alignment, set BOARD_MALLOC_ALIGNMENT in
@@ -547,14 +548,10 @@
 
 # Define some common includes
 # ========================================================
-libc_common_c_includes := \
+libc_common_c_includes += \
     $(LOCAL_PATH)/stdlib  \
     $(LOCAL_PATH)/stdio   \
 
-ifeq ($(MALLOC_IMPL),jemalloc)
-  libc_common_c_includes += external/jemalloc/include
-endif
-
 # ========================================================
 # Add in the arch-specific flags.
 # Must be called with $(eval).
@@ -873,7 +870,7 @@
 
 LOCAL_WHOLE_STATIC_LIBRARIES_arm := libc_aeabi
 
-ifeq ($(MALLOC_IMPL),jemalloc)
+ifneq ($(MALLOC_IMPL),dlmalloc)
 LOCAL_WHOLE_STATIC_LIBRARIES += libjemalloc
 endif
 
diff --git a/tests/Android.mk b/tests/Android.mk
index 278511b..3e8fbe6 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -40,7 +40,9 @@
 
 test_cflags += -D__STDC_LIMIT_MACROS  # For glibc.
 
-ifeq ($(MALLOC_IMPL),jemalloc)
+ifeq ($(MALLOC_IMPL),dlmalloc)
+test_cflags += -DUSE_DLMALLOC
+else
 test_cflags += -DUSE_JEMALLOC
 endif
 
@@ -115,10 +117,10 @@
 libBionicStandardTests_cflags := \
     $(test_cflags) \
 
-ifeq ($(MALLOC_IMPL),jemalloc)
-  libBionicStandardTests_cflags += -DUSE_JEMALLOC
-else
+ifeq ($(MALLOC_IMPL),dlmalloc)
   libBionicStandardTests_cflags += -DUSE_DLMALLOC
+else
+  libBionicStandardTests_cflags += -DUSE_JEMALLOC
 endif
 
 libBionicStandardTests_cppflags := \