diff --git a/build_tools/build_detect_platform b/build_tools/build_detect_platform
index d07e01fed2..3c8c054728 100755
--- a/build_tools/build_detect_platform
+++ b/build_tools/build_detect_platform
@@ -453,6 +453,6 @@ echo "ROCKSDB_PATCH=$ROCKSDB_PATCH" >> "$OUTPUT"
 echo "CLANG_SCAN_BUILD=$CLANG_SCAN_BUILD" >> "$OUTPUT"
 echo "CLANG_ANALYZER=$CLANG_ANALYZER" >> "$OUTPUT"
 echo "PROFILING_FLAGS=$PROFILING_FLAGS" >> "$OUTPUT"
-if test -z "$JEMALLOC"; then
+if test -n "$JEMALLOC"; then
   echo "JEMALLOC=1" >> "$OUTPUT"
 fi
diff --git a/build_tools/fbcode_config.sh b/build_tools/fbcode_config.sh
index 9e1c613ecd..404f6e9116 100644
--- a/build_tools/fbcode_config.sh
+++ b/build_tools/fbcode_config.sh
@@ -61,6 +61,7 @@ CFLAGS+=" -DGFLAGS=google"
 # location of jemalloc
 JEMALLOC_INCLUDE=" -I $JEMALLOC_BASE/include/"
 JEMALLOC_LIB=" $JEMALLOC_BASE/lib/libjemalloc.a"
+JEMALLOC=1
 
 if test -z $PIC_BUILD; then
   # location of numa
diff --git a/build_tools/fbcode_config4.8.1.sh b/build_tools/fbcode_config4.8.1.sh
index 71428d03b7..dbda429c5c 100644
--- a/build_tools/fbcode_config4.8.1.sh
+++ b/build_tools/fbcode_config4.8.1.sh
@@ -40,6 +40,7 @@ GFLAGS_LIBS=" $GFLAGS_BASE/lib/libgflags.a"
 # location of jemalloc
 JEMALLOC_INCLUDE=" -I $JEMALLOC_BASE/include"
 JEMALLOC_LIB="$JEMALLOC_BASE/lib/libjemalloc.a"
+JEMALLOC=1
 
 # location of numa
 NUMA_INCLUDE=" -I $NUMA_BASE/include/"
diff --git a/db/db_impl.cc b/db/db_impl.cc
index a27a8c06a1..ff4c44721a 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -536,6 +536,7 @@ void DBImpl::PrintStatistics() {
   }
 }
 
+#ifndef ROCKSDB_LITE
 #ifdef ROCKSDB_JEMALLOC
 typedef struct {
   char* cur;
@@ -566,6 +567,7 @@ static void DumpMallocStats(std::string* stats) {
   stats->append(buf.get());
 #endif  // ROCKSDB_JEMALLOC
 }
+#endif  // !ROCKSDB_LITE
 
 void DBImpl::MaybeDumpStats() {
   if (db_options_.stats_dump_period_sec == 0) return;