diff --git a/src/cluster/clu.f b/src/cluster/clu.f
index 8f1c2172f1534fff341322d0ab075e8689e61c74..1aecb479acc0cbfdf4c94c9973ec70b1639f357d 100644
--- a/src/cluster/clu.f
+++ b/src/cluster/clu.f
@@ -196,7 +196,7 @@ CCC              AS A FUNCTION OF INCIDENCE ANGLES
 CCC              FOR A FIXED SCATTERING ANGLE THSCA=THS-TH;
 CCC              NEEDS ONLY TH, PH, THS
 CCC
-      OPEN(IR,FILE='DCLU',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/cluster/DCLU',STATUS='OLD')
       READ(IR,*)NSPH,LI,LE,MXNDM,INPOL,NPNT,NPNTTS,IAVM,ISAM
       DO 101 I=1,NSPH
   101 READ(IR,*)RXX(I),RYY(I),RZZ(I)
@@ -3466,4 +3466,4 @@ CCC   DIMENSION AV(NDDMST*NDDMST)
  3    CDTP=CDTP+AV((J-1)*ISTEP+I)*AV(J+IR)
       RETURN
       END
-CCC
\ No newline at end of file
+CCC
diff --git a/src/cluster/edfb.f b/src/cluster/edfb.f
index e54ab7462955ef05e63f11669a2357ca7edffec2..765ceeb38ed265eb138e4384d12248d35448a877 100644
--- a/src/cluster/edfb.f
+++ b/src/cluster/edfb.f
@@ -46,7 +46,7 @@ CCC
 CCC
 CCC   READING OF DIELECTRIC FUNCTIONS DRIVEN BY ICI DEFINED BELOW
 CCC
-      OPEN(IR,FILE='DEDFB',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/cluster/DEDFB',STATUS='OLD')
       READ(IR,*)NSPH,IES
       IF(IES.NE.0)IES=1
       READ(IR,*)EXDC,WP,XIP,IDFC,NXI,INSTPC,INSN
@@ -333,4 +333,4 @@ CCC   VLST=V+(NXI-1)*VSTP
  6612 FORMAT(I5,1PD13.4)
       RETURN
       END
-CCC      
\ No newline at end of file
+CCC      
diff --git a/src/sphere/edfb.f b/src/sphere/edfb.f
index e54ab7462955ef05e63f11669a2357ca7edffec2..8590188db6aef5dca515b8e0850bc290354fbba8 100644
--- a/src/sphere/edfb.f
+++ b/src/sphere/edfb.f
@@ -46,7 +46,7 @@ CCC
 CCC
 CCC   READING OF DIELECTRIC FUNCTIONS DRIVEN BY ICI DEFINED BELOW
 CCC
-      OPEN(IR,FILE='DEDFB',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/sphere/DEDFB',STATUS='OLD')
       READ(IR,*)NSPH,IES
       IF(IES.NE.0)IES=1
       READ(IR,*)EXDC,WP,XIP,IDFC,NXI,INSTPC,INSN
@@ -333,4 +333,4 @@ CCC   VLST=V+(NXI-1)*VSTP
  6612 FORMAT(I5,1PD13.4)
       RETURN
       END
-CCC      
\ No newline at end of file
+CCC      
diff --git a/src/sphere/sph.f b/src/sphere/sph.f
index f7aafd525b4d3ed005eeb5ad52428e2eeea05965..5eb62c2fa02e53689cd6a79063d48c98c026a1de 100644
--- a/src/sphere/sph.f
+++ b/src/sphere/sph.f
@@ -127,7 +127,7 @@ CCC              AS A FUNCTION OF INCIDENCE ANGLES
 CCC              FOR A FIXED SCATTERING ANGLE THSCA=THS-TH;
 CCC              NEEDS ONLY TH, PH, THS
 CCC
-      OPEN(IR,FILE='DSPH',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/sphere/DSPH',STATUS='OLD')
       READ(IR,*)NSPH,LM,INPOL,NPNT,NPNTTS,ISAM
       READ(IR,*)TH,THSTP,THLST,THS,THSSTP,THSLST
       READ(IR,*)PH,PHSTP,PHLST,PHS,PHSSTP,PHSLST
@@ -1490,4 +1490,4 @@ CCC   LL=LM
       L=L+1
       GO TO 40
       END
-CCC
\ No newline at end of file
+CCC
diff --git a/src/trapping/frfme.f b/src/trapping/frfme.f
index 3c368a4a4cfa960d3f31eeb88d0adc5b113a85b9..caee1f4136541bd4da09487f2399c6e4cce6abdb 100644
--- a/src/trapping/frfme.f
+++ b/src/trapping/frfme.f
@@ -30,7 +30,7 @@ CCC  1WK(NLMMT),W(NKV,NKV),WSUM(NLMMT,NRVC)
       ITT1=11
       ITT2=12
       CC0=(0.0D0,0.0D0)
-      OPEN(IR,FILE='DFRFME',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/trapping/DFRFME',STATUS='OLD')
       READ(IR,*)JLMF,JLML
       IF(JLMF.EQ.1)GO TO 16
       CLOSE(IR)
@@ -493,4 +493,4 @@ CCC   DIMENSION W(NLWMT,2),YLM(NLWM+2)
    30 W(I,2)=-UIM*W(K,1)
       RETURN
       END
-CCC
\ No newline at end of file
+CCC
diff --git a/src/trapping/lffft.f b/src/trapping/lffft.f
index a805621c4c21acb24744b6f03b295f846986fe4b..521c61e8771fdc0a800e8135bbb558ee8614753a 100644
--- a/src/trapping/lffft.f
+++ b/src/trapping/lffft.f
@@ -33,7 +33,7 @@ CCC   DIMENSION TMS(LE,3)
       COMPLEX*16 CC0,UIM,SQ2ITI
       IR=5
       IT=7
-      OPEN(IR,FILE='DLFFFT',STATUS='OLD')
+      OPEN(IR,FILE='../../test_data/trapping/DLFFFT',STATUS='OLD')
       READ(IR,*)JFT,JSS,JTW
       CLOSE(IR)
       OPEN(IT,FILE='TTMS',FORM='UNFORMATTED',STATUS='OLD')
@@ -491,4 +491,4 @@ CCC   DIMENSION AC(NLEMT),WS(NLEMT)
       FFTS(3)=-DREAL(CTQCS(2))
       RETURN
       END
-CCC
\ No newline at end of file
+CCC