diff --git a/input/options b/input/options
index 651045a..ae16f8a 100644
--- a/input/options
+++ b/input/options
@@ -11,7 +11,7 @@
 # GW/GT: maxSCF thresh  DIIS n_diis lin eta COHSEX SOSEX TDA_W G0W GW0 
          256   0.0000001   T    5     T  0.0  F      F     F     F   F  
 # ACFDT: AC Kx  XBS
-         F  T   T
+         T  T   T
 # BSE: BSE dBSE dTDA evDyn
         F    T    T    F
 # MCMP2: nMC    nEq    nWalk dt  nPrint iSeed doDrift
diff --git a/src/RPA/URPAx.f90 b/src/RPA/URPAx.f90
index 90f329c..ec52d87 100644
--- a/src/RPA/URPAx.f90
+++ b/src/RPA/URPAx.f90
@@ -122,7 +122,7 @@ subroutine URPAx(TDA,doACFDT,exchange_kernel,spin_conserved,spin_flip,eta,nBas,n
   if(exchange_kernel) then
 
     EcRPAx(1) = 0.5d0*EcRPAx(1)
-    EcRPAx(2) = 1.5d0*EcRPAx(2)
+    EcRPAx(2) = 0.5d0*EcRPAx(2)
 
   end if
 
diff --git a/src/RPA/unrestricted_ACFDT.f90 b/src/RPA/unrestricted_ACFDT.f90
index ded29de..bdd9435 100644
--- a/src/RPA/unrestricted_ACFDT.f90
+++ b/src/RPA/unrestricted_ACFDT.f90
@@ -192,7 +192,7 @@ subroutine unrestricted_ACFDT(exchange_kernel,doXBS,dRPA,TDA_W,TDA,BSE,spin_cons
 
     EcAC(ispin) = 0.5d0*dot_product(wAC,Ec(:,ispin))
 
-    if(exchange_kernel) EcAC(ispin) = 1.5d0*EcAC(ispin)
+    if(exchange_kernel) EcAC(ispin) = 0.5d0*EcAC(ispin)
 
     write(*,*) '-----------------------------------------------------------------------------------'
     write(*,'(2X,A50,1X,F15.6)') ' Ec(AC) via Gauss-Legendre quadrature:',EcAC(ispin)