diff --git a/flaim/libflaim.pc.in b/flaim/libflaim.pc.in
index 429895f..8a04443 100644
--- a/flaim/libflaim.pc.in
+++ b/flaim/libflaim.pc.in
@@ -1,3 +1,5 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
 
diff --git a/ftk/libflaimtk.pc.in b/ftk/libflaimtk.pc.in
index 6c5c7d9..26df2af 100644
--- a/ftk/libflaimtk.pc.in
+++ b/ftk/libflaimtk.pc.in
@@ -1,3 +1,5 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
 
diff --git a/sql/libflaimsql.pc.in b/sql/libflaimsql.pc.in
index 62c5b3b..597c087 100644
--- a/sql/libflaimsql.pc.in
+++ b/sql/libflaimsql.pc.in
@@ -1,3 +1,5 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
 
diff --git a/xflaim/libxflaim.pc.in b/xflaim/libxflaim.pc.in
index 2fc02e2..5e44e81 100644
--- a/xflaim/libxflaim.pc.in
+++ b/xflaim/libxflaim.pc.in
@@ -1,3 +1,5 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@